Ultimate Questions in Philosophy of Religion

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Publisher: www.al-islam.org
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Ultimate Questions in Philosophy of Religion

Author: Sheikh Mansour Leghaei
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Ultimate Questions in Philosophy of Religion

Ultimate Questions in Philosophy of Religion

Author:
Publisher: www.al-islam.org
English

Chapter 2: Living Awake

Further into the Night

[In order] to create Light!

In the previous chapter, I shared with you examples of some thinkers who worked on issues of existence, but whose solutions to such thought produced unfavourable outcomes.

In this chapter we will start waking up to ourselves in order to create light for us, and those around us, who may be in need of this light.

Firstly, let me share with you two positive examples of thinkers who also worked on issues of life, and in managing to find satisfactory answers to their questions, resulted in a more positive outlook on life.

I think, therefore I am!

René Descartes was a French philosopher and mathematician of the 17th century AD. He is sometimes called the father of modern philosophy.

Before his time, philosophy had been dominated by the method of Scholasticism, which was entirely based on comparing and contrasting the views of recognized authorities. Rejecting this method, Descartes stated, "In our search for the direct road to truth, we should busy ourselves with no object about which we cannot attain a certitude equal to that of the demonstration of arithmetic and geometry."

He therefore determined that one should hold nothing true until grounds had been established for believing it true. Descartes reviewed all his knowledge from sensible and perceptible as well as rational and traditional sciences.

He then invalidated all this knowledge, which resulted in all his knowing platforms from sensible to rational collapsing, leaving him swimming in the suspense of the ocean of doubt and uncertainty.

As he was drowning in his whirlpool of doubt, he realized that whatever else he doubted, he could not doubt his doubt. He said to himself:“God, I doubt myself, my senses, my mind and the world around me, but I cannot doubt that I doubt.”

He immediately concluded that if one doubts, one is able to doubt.

From this single fact which he expressed in the famous words, ‘ Cogito, ergo sum',“I think, therefore I am” , he began his investigations.

Throughout his investigation and sincere search for truth, he studied different schools of thought, which were accessible to him. He confirmed through the conclusions reached from this investigative work, his belief in the existence of God, and accepted Christianity as the best religious path available to knowledge, at that time.

He did however agree, that there could be a better religion than Christianity, giving the land of Persia (Iran) as an example of a place where one might be able to find such a religion which at that time, he was not aware of, to believe in!

We will investigate the validity of this famous saying later in this chapter.

The Inner Intuition

Al-Ghazali (also known as Algazel in the West) the most famous Iranian Muslim Sufi of the mid 11 and the early 12th century AD, is an eastern example of this same intellectual journey in search for truth.

Although honored by his appointment as a Professor at the Nizamiyah University of Baghdad, which was recognized as one of the most reputed institutions of learning in the golden era of Muslim history,

At the age of 53, he gave up his academic pursuits and worldly interests in search of truth. This was a time of mystical transformation and occupied about 10 years of his life.

In his book“The Rescuer from Delusion” (Al-Monqeth Menal-Dhalal) which is his account of his spiritual journey in search for truth, he states that his journey began with doubting all his sensible and rational knowledge.

He writes:“I could not convince myself that one's whole life in this world is not a mere dream. Did not the Prophet (of Islam) say: “People are asleep, they wake up when they die ” ? If so, what do we have to guarantee that we are not sleepwalkers!

This situation was so puzzling to me that I ended up in bed for about two months until, my heart was enlightened by the sparkle of a divine light which needed no rational explanation.”

He solved the puzzle of his existence in his famous words:“Our existence is what we are aware of and find within ourselves” . He later called this fundamental bedrock of knowledge ‘The Inner Intuition (Al-Kashf)’.

Avicenna Vs Descartes

Abu 'Ali al -Hussain lbn 'Abd-Allah lbn Hasan Ibn 'Ali lbn Sina, (which was Europeanised into Avicenna), the Iranian Muslim philosophy genius, mathematician and physician of the late 10 th and early 11 th Century AD, discovered the fallacy of Descartes' famous words of“I think, therefore I am” , more than six centuries before the birth of Descartes.

In the third section of his book“ Hints & Notices” (Al-Esharat Wa Tanbeehat), he argues:“If anyone claims that ‘ he thinks therefore he exists'; he has fallen into the trap of creating a vicious circle of circumstances for himself, because, he is trying to prove his own existence by means of his own thought.

In other words, to accept that ‘you’ think or ‘you’ doubt , you would already have needed to accept ‘ you ' exist, which is exactly the original claim.”

Therefore, the expression of ‘I think, therefore I am ' is not the first platform of knowledge.

The fallacy of Descartes' so-called single sure fact can be shown by means of prepositional logic utilising the truth-table method.

The meaning of Descartes' statement in a logical structure is:

Premise 1: All those who think, exist.

Premise 2: I think.

Conclusion: I exist.

However, the fallacy of Descartes' theorem is shown by, the need to admit to the existence and accuracy of self-evident arguments of formal logic, before admitting his thinking.

Axiom (Self-evident knowledge)

In order for us to truly answer the question of our existence or any other question about the existing world, we need to know the fundamental source of human knowledge. With exception of Sophists, most philosophers, whether eastern or western, contemporary or ancient, agree that human knowledge is divided into two categories:

- Self-evident knowledge

- Theoretical knowledge

Axiom or Self-evident knowledge is the type of knowledge that we accept as true without the need of proof or reasoning.

Examples of axioms are:

“No sentence can be true or false at the same time.” (the principle of contradiction)

“If equals are added to equals, the sums are equal.”

“The whole is greater than any of its parts.”

The most certain of human knowledge is mathematics. Pure mathematics begins with axioms from which other theorems are driven. This procedure is necessary to avoid circularity, or an infinite regression in reasoning and as such it is impossible to provide any proof for them.

An Axiom can be defined as ‘self-evident truth' for it does not need any analysis. Rather it is the bottom line and foundation for all types of human analysis and acquired knowledge. All it requires is attention, sound mental health, and lack of fallacy.

Theoretical knowledge is a type of knowledge, which requires thinking and reasoning. An example of this would be algebraic equations.

If you would like a better understanding of the types of human knowledge mentioned above, then take the example of your personal computer. In order for you to run your PC for any other application, your PC needs to have an operating system by which the computer can be run.

The operating system is what the manufacturer installs in your computer and you are advised not to delete it from your machine, otherwise you will not be able to run any other application.

I believe that self-evident knowledge, especially the ‘ impossibility of the conjunction of contradictories ' (the law of contradiction), is the very fundamental human platform for obtaining knowledge.

Even the Sophists claim, that without such a platform, any human knowledge, would not be possible. I will endeavour to provide you with more explanation in regard to the fallacies of the Sophists and Skeptics.

Therefore, Al-Gazaali's experience of ‘inner intuition' to prove his own existence is more accurate than that of Descartes' theorem.

If you still find the above explanation a bit too obscure, let me put it to you like this:

Consider this theorem:

All Aussies are mortal. We evaluate the truth of this sentence in the following manner:

-All humans are mortal.

-All Aussies are humans.

All Aussies are mortal.

The validity of the first premise is also known from another theorem, which is:

- All animals are mortal.

-All humans are animals.

All humans are mortal.

Similarly, the validity of the first theorem is also known from yet another theorem, which is:

- All living creatures are mortal.

- All animals are living creatures.

All animals are mortal.

The ladder of theorems will continue until you end up to a premise which is in itself so self-evident that you do not need proof, otherwise a vicious circle or infinite series of theorems will emerge, both of which are impossible.

[Immanuel Kant: Prolegomena to Any future Metaphysics, Section 45]

Philosophy Vs Sophism

Let us first define ‘Sophism'. Sophism is derived from the Greek ‘sophisma” meaning acquired skill or clever device. It is different from the word ‘Sufi' which is from the Arabic f , literally meaning "woolen" (perhaps because of their woolen garments).

The rise of philosophy was in fact a response to the fallacies of Sophism. Contrary to Sophists who deny or doubt the existence of the external world, philosophers believe in the reality of this world and that this reality- whether partial or total, is accessible and communicable.

Types of Human Perception

Philosophers divide human perception into three main categories and explain that the task of a philosopher or a logician is to distinguish between them.

1) Real Perceptions: Consist of perceptions that have real existence from the human mind.

2) Agreed Perceptions (E'tebariat): Such as the term ‘human being' which is a common perception driven from all examples of human kind. E'tebariat, therefore, exists only in the mind but its examples and applications exist in reality. In other words, there is no ‘ human being' in the external world. What exists in the outer world are examples of human beings.

The concept of the ‘human being' is something that our mind extracts from previous experiences of numerous examples of human beings. What exists in reality is tom, dick and harry. The generic term 'human being' is an extractive concept that we drive from those examples.

Thus, ‘human being' has no existence out of our mind and imagination except in the form of its examples. Another example is numbers. What we have in real life is ‘apple', or ‘apples', then we extract the concept of ‘one apple' or ‘two apple' etc. Thus, numbers don't exist by themselves in reality.

3) Illusion and imagination - have no real existence, such as a man born with two snakes on his shoulders!1

Rebuking the Sophists

Instinctive Knowledge

1. Instinctive knowledge is the knowledge with which we are born. Like the ROM (Read Only Memory) of the computer. In computer science, semiconductor-based memory is that which contains instructions or data that can be read but not modified. To create a ROM chip, the designer supplies a semiconductor manufacturer with the instructions or data to be stored. The manufacturer then produces one or more chips containing those instructions or data.

2. When we study the biography of the most skeptics or sophists, we without exception find, that none of them were actually born sophist, not believing that nothing exists or if it exists it is not comprehensible, otherwise they would not have sucked the milk from their mothers' breast.

3. Have you ever known any sophist cry when it is time to laugh, use his hands to watch something, or hear a voice with his eyes?! We know, as mentioned in the previous chapter, that it is related that Pyrrho acted on his own principles to such an extreme, that to safeguard him being run over by carriages or falling off a cliff, his friends were obliged to accompany him wherever he went.

Even if we accept the validity of his argument, based on the principle of ‘uncertainty' one could have asked Mr. Pyrrho how would he be able to guarantee that his friends would be able to save him? What proof did he have of the likelihood of a real carriage running by?

Thus, it is obvious that the arguments of the Sophists are mere fallacy and no doubt all sophists are realist in their practical life. I would dare any sophist to jump from a cliff if there is no real life and certainty, or if life is a mere dream.

4. Any Sophist who expresses his or her opinion, have unconsciously admitted that they have tongue to talk with, there is someone around them to talk to and there is a means of communication. These facts are against the so-called principles of Sophism.

Answers to Dreams and Illusions

The fact that we know we have dreamed is a proof by itself that there must be a real life that we have already experienced which is comparable to what we have learned about the dream world. Similarly, the fact that we know there are many optical as well as other types of illusions, is enough to prove that there must be real sight which in comparison to it, we conclude illusions.

The same explanation can be sited about the following arguments, which although logically sound true, we know to be false. Indeed, without having any distinct and real measurement, how would it be possible for us to distinguish truth from falsehood?

Have you ever seen anyone forge a $15 note? Of course not, simply because there is no such thing as a $15 note to counterfeit from. Hence, contrary to sophist's fallacy, we may say all dreams and illusions are indirect proof of the real world around us.

In conclusion, the fact that we make mistakes in some of our thinking or seeing does not denote the validity of our knowledge overall. In fact, the task of various types of science from philosophy and logic to physical sciences is to help us learn from those mistakes.

Consider the following statement: ‘Some dogs are Dalmatians; therefore all dogs are Dalmatians!' Obviously the conclusion that was reached is incorrect. However, we all know the physical explanation of why and how a mirage happens or why a stick looks broken in the water by an optical law of refraction.2

Answers to Logical fallacies

Formal logic was founded by Aristotle to create a mathematical basis for disclosing the fallacy of the Sophists' theorems. The fallacy of all the examples mentioned so far and a logician can easily disclose many other such fallacies.

In the following examples, I will just show you the fallacy of the first example used in the first chapter and leave the rest to your interest in logic. However, before you indulge too much into logic, remember again the fact that you are able to identify that the theorems were false, even though you can't necessarily explain why. This again is further proof for instinctive self-evident knowledge.

In the first example, a Sophist fooled us by the means of a conjuncture only. Let us revise the theorem again:

- Water is fluid (flowing).

- Ice is from water.

-Ice is fluid!

The fallacy of the theorem is easily disclosed when the conjuncture ‘from ' is highlighted in a different colour. Obviously, ice cannot be water in order to apply all the characteristics of water on it, rather it is from water.

Let me show you the fallacy of the theorem in a very clear, mathematical way:

All A = B

Some C = A

All C = B

Now it is obvious that the theorem is a mere fallacy and there is no truth in it. As a matter of fact, if there were no reality and there was no self-evident knowledge within each and every human, do you think we would be able to unveil the falsehood?

Before I end this chapter with the last part of the Simile of The Cave, which would answer the first part, one should remember that if some thinkers do not follow the rules set, even those set by themselves, whether in logic or philosophy, this does not surmise that logic or philosophical rules are useless; rather we should blame those who infringe the law on us, not the law itself.

The Simile of the Cave (Last Part)

‘Then think what would naturally happen to them if they were released from their bonds and cured of their delusions. Suppose one of them were let loose, and suddenly compelled to stand up and turn his head and look and walk towards the fire, all these actions would be painful and he would be too puzzled to see properly the objects of which he used to see the shadows.

So if he was told that what he used to see was mere illusion and that he was now nearer reality and seeing more correctly, because he was turned towards objects that were more real, and if on top of that he were compelled to say what each of the passing objects was when it was pointed out to him, don't you think he would be at a loss, and think that what he used to see was more real than the objects now being pointed out to him?'

‘Much more real.'

‘And if he were made to look directly at the light of the fire, it would hurt his eyes and he would turn back and take refuge in the things which he could see, which he would think really far clearer than the things being shown him.'

‘Yes.'

‘And if,' I went on, ‘he were forcibly dragged up the steep and rocky ascent and not let go till he had been dragged out into the sunlight, the process would be a painful one, to which he would much object, and when he emerged into the light his eyes would be so overwhelmed by the brightness of it that he wouldn't be able to see a single one of the things he was now told were real.'

‘ Certainly not at first,' he agreed.'

‘Because he would need to grow accustomed to the light before he could see things in the world outside the cave. First he would find it easiest to look at shadows, next at the reflections of men and other objects in water, and later on at the objects themselves.

After that he would find it easier to observe the heavenly bodies and the sky at night than by day, and to look at the light of the moon and stars, rather than at the sun and its light.'

‘Of course.'

‘The thing he would be able to do last would be to look directly at the sun, and observe its nature without using reflections in water or any other medium, but just as it is.'

‘That must come last.'

‘Later on he would come to the conclusion that it is the sun that produces the changing seasons and years and controls everything in the visible world, and is in a sense responsible for everything that he and his fellow-prisoners used to see.'

‘That is the conclusion which he would obviously reach.'

‘And when he thought of his first home and what passed for wisdom there, and of his fellow-prisoners, don't you think he would congratulate himself on his good fortune and be sorry for them?'

‘Very much so.'

‘There was probably a certain amount of honour and glory to be won among the prisoners, and prizes for keen-sightedness for anyone who could remember the order of sequence among the passing shadows and so be best able to predict their future appearances.

Will our released prisoner hanker after these prizes or envy this power or honour? Won't he be more likely to feel, as Homer says, that he would far rather be“a serf in the house of a landless man” , or indeed anything else in the world, than live and think as they do?'

‘Yes,' he replied, ‘he would prefer anything to a life like theirs.'

‘Then what do you think would happen,' I asked, ‘if he went back to sit in his old seat in the cave? Wouldn't his eyes be blinded by the darkness, because he had come in suddenly out of the daylight?'

‘Certainly.'

‘And if he had to discriminate between the shadows, in competition with the other prisoners, while he was still blinded and before his eyes got used to the darkness - a process that might take some time - wouldn't he be likely to make a fool of himself?

And they would say that his visit to the upper world had ruined his sight, and that the ascent was not worth even attempting. And if anyone tried to release them and lead them up, they would kill him if they could lay hands on him.'

‘They certainly would.'

‘Now, my dear Glaucon ,' I went on, ‘this simile must be connected, throughout, with what preceded it.

This is a more graphic presentation of the truths presented in the analogy of the Line. In particular, it tells us more about the two states of mind identified in the Line Analogy as Belief and Illusion.

We are shown the ascension of the mind from illusion to pure philosophy, and the difficulties, which accompany its progress. The philosopher, having achieved the supreme vision, is required to return to the cave and serve his fellows. His very unwillingness to do so, however, being his chief qualification.

The simile is the moral and intellectual condition of the average man from which Plato starts, and though clearly the ordinary man knows the difference between substance and shadow in the physical world, the simile suggests that his moral and intellectual opinions often bear as little relation to the truth as the average film does to real life.

Now if you would like to enlighten your life as well as your fellows, and if you would also like to raise yourself from the present world situation with all its calamities, meaningless, doubts and hectic properties, to rest forever in the ocean of peace, tranquility and certainty, then join me in this intellectual journey and read the following chapters thoroughly and carefully and think about them.

The choice is yours!

Notes

1. This imaginary character was named ' Zahhak ', in the ancient Iranian tale.

2. The change in direction that occurs when a wave of energy such as light passes from one medium to another of a different density, for example, from air to water.

Chapter 3: Tools of Knowledge 1

And among His Signs is the creation of the heavens and the earth, and the difference of your languages and colours. Verily, in that are indeed Signs for men of Sound knowledge. The Holy Qur'an [30:22]

Knowing that we really do exist and there is an existing world around us, the next question arises as to what the reality of knowledge is and how can we gain knowledge about ourselves and the world around us? What types of Tools of Knowledge do we have? What is the relation between the knower and the object known? How much of the real world is accessible to us?

Types of Knowledge

Human knowledge is divided solely into two types:

1. Knowledge by presence. Like the knowledge everyone has about one's self. Such as the knowledge you yourself have about your feelings. In this type of knowledge the knower and the known object are unified.

2. Acquired knowledge. This is most types of human knowledge and is also the one that we will mainly deal with in this chapter.

Definition of Knowledge

Imagine a picture of a natural scene is shown to you. The size of the picture is 10 X 15 cm. In the picture you see a landscape that you know is about 5 square kilometers surrounded by tall mountains.

A river which you approximate it's width to be fifty meters is crossing the middle of the view. At the river's bank from both sides you can see tall white silver firs lined up. Your family is also seated under the trees having their lunch. I could go on more, describing further details of the picture.

Now, if your friend were to ask you if the picture you have at hand contains all the length, width, depth and physical characteristics of that landscape, how would you reply?

“Obviously not” , you will reply without hesitation. All that would not fit in such a small space. What are really on the paper are some colourful spots. Yet, it is the image of the landscape.

The function of our mind is similar to a camera, or a mirror, which reflects the image of the object known.

Although knowledge does not really need any definition, it is sometimes defined as:

“The presence of the image of an object in mind.” [al-modhaffar: Al-manteq] Therefore, knowledge is the bridge of converting a real external object, in its true form, to its reflection in one's mind.

Differences between Mind and Mirror

Despite similarities between the function of the mind and that of the mirror, there are at least five differences, which uniquely characterise the function of mind.

1. Reflection of meaning: A Mirror reflects solely optical images. In other words, if a man is standing in front of the mirror, it will show his body shape, colour and size. The mirror under no circumstances reflects his knowledge, feelings, hatred or love for others etc. However, the mind can reflect not only the sensible objects but emotion and feelings as well.

2. Non-correction power: If the mirror is concave it shows the object bigger than its real size, and smaller if it is convex. It has no power of knowing its mistakes or any ability to correct them. However, the human mind can uncover the mistakes of illusions and is also able to correct them explaining why and how the illusions and delusions occur.

3. Self-reflecting: no mirror in the world can reflect its own image to itself, whereas the mind is capable of reflecting others images as well as its own. Rather the mind's own reflection is far more accurate, a phenomenon called ‘knowledge by presence'.

4. Generalization: A mirror will only reflect objects put in front of it. It has no power of reflecting any other object around it. However, the human mind recognizes and reflects sighted objects as well as being capable of linking them to numerous similar objects and applying the same rules to them. Scientific laws are derived from the means of this characteristic of the mind.

5. Deepening: Any mirror will only reflect the object in front of it. It cannot convert the reflected object to another mirror to reflect another object. By contrast, our mind is able to change an object known to another reflective object reflecting the reality of a third known object. This is called a ‘ Sign Knowledge ', which will be explained later in this chapter.

Ignorance and its types

Before we proceed any further to discover the sources of human knowledge, let me share with you the meaning of ignorance and two types of it.

Ignorance by definition is ‘lack of knowledge on the part of one who is able to obtain knowledge.' Thus, a piece of wood or a rock, are not ignorant as they are not capable of obtaining knowledge.

Ignorance is also divided into two types:

1. Simple Ignorance: This means a type of ignorance where the person is aware of his ignorance. The famous saying of Socrates“Wisest is he who knows what he does not know” refers to this first type of ignorance.

2. Compound Ignorance: Is a type of ignorance where the ignorant is unaware of his ignorance and moreover assumes that he does know. Compound ignorance is the combination of two types of ignorance; firstly ignorance about the truth and secondly, ignorance of the fact that he does not know the truth. The example of compound ignorance is optical illusions such as mirage.

Tools for Acquiring Knowledge

Sense experience

Nature is the first human source of knowledge and our five external senses are the tools of accessing this source.

From the time we are born, we hear sounds around us, we see objects and people around us, we touch and taste and smell things and through each we gain some knowledge accordingly.

Human beings are similar to animals at this level, with the only difference being in the level of perception between humans and some animals. For instance, the sense of smell in dogs and ants is stronger than in humans, as are the navigational skills of a bat stronger than a human. Dogs see are only able to see the colour gray etc.

In spite of the differences in depth of sensory perception between humans and animals, it is common-sensical that for a healthy human being, external senses are the first tools of obtaining knowledge to the extend that it is said in Arabic:“One who misses a sense misses a knowledge” .

However, there are different opinions among philosophers from ancient times to the present about the validity of our sense of perception. Plato, for instance, did not accept nature as a source of knowledge; his reason being the relationship between mankind and nature is interlinked and therefore cannot bring about knowledge.

Descartes and Kant also hold the view that sensory perception is good for daily life experiences yet it is not a reliable tool for obtaining knowledge.1

In contrast, empiricists assert that human knowledge arises from what is provided to the mind by the senses or by introspective awareness through experience. John Locke, the English philosopher of the 18th and 19th century, was the first to give this systematic expression to empiricism followed by George Berkeley and David Hume.

According to empiricism sensory and sensational experience are the only tools to feed the human mind with knowledge. Thus, we can only understand what we can physically perceive. Even when one imagines a mountain of gold, is it because you have already seen a mountain of gold? Or rather because you have seen a mountain and you have seen gold? Your mind then combines these two sensational perceptions into one.

Positivists, such as French mathematician and philosopher Auguste Comte of the 19th century, further developed the idea of empiricists and based their philosophy on experience and empirical knowledge of natural phenomena, in which metaphysics and theology are regarded as inadequate and imperfect systems of knowledge.

During the early 20th century a group of philosophers who were concerned with developments in modern science, rejected the traditional positivist ideas that held personal experience to be the basis of true knowledge and emphasized the importance of scientific verification. In short, the main theory of empiricists is that without sensory perception, we have no knowledge about the world.

Characteristics of Sensory Perception

a. Individualist: The first characteristic of sensory perception is that it is obtained individually. For instance, a child gradually gets to know her mother, then father then brothers and sisters and so on. She has no idea of human kind in general.

b. Appearance: Sensory perception also shares with us the appearance of the objects. For instance, your eyes can only bring knowledge about colours and shape and size of an object. It cannot show us the depth and the nature of it.

c. The Present: Sensory perception belongs only to the present time. It cannot show us the past or the future. In other words, you cannot observe the events prior to your birth. (remember the film of past events is not the event itself.)

d. Regional: Sensory perception is also limited by place. Human and animals can obtain sensational knowledge of the area, which is within their vision or hearing. For instance, as far as sensory perception is concerned, we have no sensational knowledge about the surface of the moon, for in order to do so, one would have to have had personal sensational experience of it.

Comments on Empiricism

Although it is agreed that sensory experience is the first and foremost elementary tool of knowledge for humans and animals, we do not limit the tools for which to gain knowledge, to the senses for the following reasons:

1) Senses can only show us objects. The relationship between them is uncovered by the means of rational thinking. For instance, our eyes can see the key and the lock, but the functioning relationship between them is known by the rational law of cause and effect. In other words, no scientific law could be possibly obtained without rational analysis attached to the sensory experience.

Unfortunately some of the empiricists such as Hume have denied the law of cause and effect, as it would not be compatible with the theory of empiricism. He explained that the relation between the unlocking by means of a key exists by what he calls ‘mere association' which makes us believe the relation is permanent.

His point is that all human knowledge is based on the theory that ‘if A therefore B' and includes his hypothesis ‘or else'. He cannot, however, suggest a certain idea either. (Pay attention!)

It is important however to note that in addition to linking objects by cause and effect, so many objects of natural phenomena come into association with each other such as day and night, pen and pencil, book and library, yet we never relate them to each other as cause and effect.

2) Sensory experience cannot denote the impossibility of the impossible. For example, sensory experience cannot denote the existence of a triangle with four angles, simply because the senses have no ability to experience such things.

3) Mathematics is the most certain science yet it is not experimental. In fact, many of its concepts cannot be experienced by the senses. For example, there is no circle in the real world where the distance between its perimeter and the centre is exactly the same from any point.

Rational perception

In light of the above explanation, it is obvious that reasoning and rational analysis are the second necessary tools for obtaining knowledge in humans. In addition to this, there are certain types of mathematical knowledge such as geometry, which is considered the ideal for all sciences and philosophy.

However it is important to note that there are certain geometrical rules that are universally agreed upon as to their certainty by the means of reasoning alone.

This fact has obligated some philosophers such as Rene Descartes and Immanuel Kant, to form the doctrine of Rationalism, which emphasises the unique role of reasoning in obtaining knowledge, in contrast to empiricism, which emphasises the role of sensory perception to obtain knowledge.

We believe reasoning is the higher tool of obtaining knowledge and is the very tool, which distinguishes the realm of humans from the kingdom of animals.

Nonetheless, we do not agree that reasoning is the sole tool of obtaining knowledge. In fact, the main problem of empiricists as well as rationalists is that each one tries to generalize a tool beyond its own world.

Empiricists are correct in a sense that most natural knowledge cannot be obtained without enjoying sensory experience, just as it is impossible to explain to a born blind the difference between the different colours. Thus, it amazes us to learn that Beethoven, one of the greatest musicians of all time, had lost the sense that he would have relied on most, his sense of hearing. However, he was not born deaf.

Sign

One of the greatest tools of obtaining knowledge is what is introduced to mankind by the Holy Quran, named ‘ the tool of Sign'.

The contemporary Iranian Muslim philosopher; Motahari is perhaps the first who discovered this as a tool of human knowledge. Most human knowledge is in fact obtained by the means of signs. According to Motahari and other Muslim philosophers“epistemologically there is no difference between knowing about Napoleon Bonaparte and knowing God in a sense that we people of the 21st century have not eye witnessed any of them.

Therefore, since we know about Napoleon by means of some historical signs affirming his existence and life, similarly we know about the existence of God by the means of natural, rational and other types of signs glorifying His existence. The Holy Qur'an considers the entire world “Divine Signs” . For instance, consider the Ayat of 20-22 in chapter 30 of the Holy Qur'an:

“ And of His signs is that He created you from dust, then lo! Ye are human beings scattering (in the world). And of his signs is that he created for you from your selves, mates that ye may dwell (inclined) unto them, and caused between you love and compassion: Verily in this are signs for a people who reflect. And of His signs is the creation of the heavens and the earth and the variety of your languages and your complexions; verily in this are signs for the learned (ones).”

When your teacher gives you a lesson, how would you know about his knowledge level? Is it that his eyes, face, height, or any other part of his appearance reflect his knowledge, or is it that the subject he is sharing with you is like a sign (secondary mirror as explained in the beginning of this chapter) reflecting his knowledge to you?

When you really pay more careful attention to most human knowledge, you will agree that most of our knowledge is in fact obtained in such a manner. Therefore, the one who is limits his knowledge to whatever he can experience by his surgical knife instead of the library has already closed his eyes to most human knowledge.

Note

1. This, incidentally is in spite of the fact that when Descartes was asked about his library by one of his friends he took him to his backyard showing him the dissection of a calf as being his library.