Introduction
In the history of Greek medicine three main schools were notable, namely the empiricists(Ashab al
‑
Tajarib)
, the dogmatists(Ashab al
‑
Qiyas)
, and the methodists (Ashab al
‑
Hiyal)
. Different opinions and arguments of these sects can best be seen in two works of Galen: "On Medical Sects for Students"(Fi firaq al
‑
tibb li al
‑
muta'allimin)
and "On Medical Experience"(Fi al
‑
tajribah al
‑
tibbiyyah)
. In his work, Pinax, which is in fact a list of his own works, Galen advises the students to start their studies by reading "On Medical Sects."
Hunayn ibn Ishaq, who translated this book into Arabic, says that the purpose of Galen was to bring side by side the arguments of these three sects, which differ from each other by genus. Hunayn also adds that each of these sects includes smaller divisions which differ from each other by the species. This book, known as De sectis in Latin, was one of the sixteen works by Galen which were compulsory for the medical students of Alexandria.
Galen's "On Medical Experience" was translated by Hunayn from Greek into Syriac and by Hubaysh from Syriac into Arabic. In this work, Galen creates an imaginary court in which the representatives of each school demonstrate their positions and refute the positions of the other schools. He starts his work by saying:
The art of healing was originally invented and discovered by analogy (qiyas) in conjunction with experience (tajribah) and today also it can only be practised excellently and done well by one who employs both of these methods.
Although his position is made clear in the above passage, yet he disassociates himself from either of the two sects, namely the dogmatists and the empiricists, in the following statement:
You must not allow yourself to think that what I am about to say first against empiricism in this book is my own personal opinion, or that the second argument I use in support of empiricism is my own view. Rather I shall let one of the dogmatists bring forward the first argument, which is similar to Asclepiades' view, and the second argument shall be laid down by a representative of the empiricists, Menodots if you like, or Serapion, or Theodosius."
At the same time as the Greek medical heritage was being transmitted into Arabic, arguments concerning the nature of these sects were taking place among Islamic physicians.
Al‑Mas'udi states that at the time of al‑Wathiq, the `Abbasid caliph, a group of philosophers and physicians, among which were Bukhtishu`, Ibn Masuyah, Hunayn and Salmuyah, were asked by the caliph about the origin of medicine and whether it was sense experience, reason or tradition.
One of those present spoke about the arguments of each sect on these matters. When al‑Wathiq asked about the opinion of the majority of the physicians, they unanimously declared that they are in favour of the dogmatists.
Ishaq ibn Hunayn in "The History of Physicians and Philosophers" quotes John Philoponos as saying that Asclepius, who was the first physician, invented medicine with the help of experience. And after mentioning the physicians who appeared after Asclepios, Ishiq continues as follows:
They considered experience and analogy as the most –correct methods of medicine. Medicine thus continued to be transmitted from those pupils to those members of their families whom they taught and left behind.
When Plato appeared and studied the treatises, he realized that experience alone was bad and dangerous and that analogy alone was not correct. Therefore, he considered the two views together as correct. He burned the books which they had composed and left the old books which contained the two views together.
Ishaq mentions that after Plato, Hippocrates the son of Heracleides remained as the unique man of his time, the man of perfect virtue, the one who had become proverbial, the philosopher‑physician. He strengthened the art of analogy and experience in a marvellous manner, so that no blame would be able to dissolve it and tear it apart. Then he continues:
When Hippocrates died, he left behind children and pupils from the clan of Asclepios and other clans. Medicine continued to be transmitted from those physicians to those whom they taught, until the time of the appearance of Galen. The noteworthy physicians in the interval between Hippocrates and Galen are quite a few.
After mentioning Hippocrates and Galen, who supported experience together with analogy, Ishaq refers to methodism as follows:
Among them there was one who held a different opinion and composed books on the procedures of methodism in the craft of medicine. He wanted to corrupt the people and to lead them away from the belief in analogy and experience. Some physicians continued to accept methodism, and others did not, until Galen appeared. He disapproved of methodism, destroyed it, burned the books that existed on it, and invalidated that technique.
As mentioned above, in the 3rd/9th century, scholars and physicians paid special attention to these three sects and their arguments. What was agreed upon was that experience and analogy should be used together to solve medical issues and that each one alone was not valid. This point has been made clear by Ibn Abi Sadiq Nishaburi (fl. 5th/ 11th century) in his "Commentary on Hippocrates's Aphorisms".
In connection with the first aphorism, that is "Life is short, and art is long, the occasion fleeting, and experience is dangerous and analogy is difficult"(al
‑
`umr qasir wa al
‑
sina`ah tawilah wa al
‑
waqt dayyiq wa al-tajribah khatar wa al
‑
qada ‘asir)
, Ibn Abi Sadiq comments that if experience is not based on analogy and not founded on a principle and rule it can be very dangerous. On the other hand, analogy, which is difficult in itself, cannot be used as a source for other arts, without the help of experience.
The most comprehensive account on the medical sects is given by the Iranian physician Ibn Hindu of Qumm (d. 420/1029) in his book entitled "The Key to the Science of Medicine"(Miftah al
‑
tibb)
.
The sixth chapter ofMiftah al
‑
tibb
is devoted to the medical sects, a summary of which is as follows:
Each of the various medical `sects' has its own particular view and method in recognizing illness and treating it. The physicians agree that the goal of medicine is to confer the benefit of health; that is, to give health to sick persons. On the method of obtaining the things which are beneficial to health, however, they differ. Some say that such thins are obtained through experience (tajribah ).
These are called `empiricists'. Others believe that experience alone is not enough, but that is must rather be combined with analogy (qiyas); these are called the `dogmatists'. There is also a third group, called the `methodists' (ashab al-hiyal), because they imagine that they have, through clever tactics, cut short the science of medicine, purifying it of the superficialities and accretions with which the empiricists and dogmatists preoccupy themselves.
Ibn Hindu, after introducing the three sects, goes on to describe and characterize each of these sects as follows.