The great Jewish physician of the ninth century was Isaac Ben Soliman, better known as Isaac el Israili, and who is sometimes spoken of as d'Israeli. He was a pupil of Isaac Ben Amram the younger, probably a grandson of another Isaac Ben Amram, who, after having become famous in Bagdad, went to Cairo and became the physician of the Emir Zijadeth III. The younger Isaac established a school, and it was with him that Israeli obtained his introduction to medicine. He practised first as an oculist and then became body-physician to the Sultan of Morocco. Because of the sympathy of his character and his unselfishness he acquired great popularity. Hyrtl refers to him respectfully as "that scholarly son of Israel." Curiously enough, considering racial feeling in the matter, he never married, and when asked why he had not, and whether he did not think that he might regret it, he replied, "I have written four books through which my memory will be better preserved than it would be by descendants." The four books are his "Treatise on Fevers," his "Treatise on Simple Medicines and Ailments," a treatise on the "Elements," and a treatise "On the Urine." Besides these, we have from him shorter works, "On the Pulse," "On Melancholy," and "On Dropsy." His hope with regard to his fame from these works was fulfilled, for they were printed as late as 1515 at Leyden, and Sprengel declared them the best compendium of simple remedies and diet that we have from the Arabian times. One of his translators into Latin has called him the monarch of physicians.
Some of his maxims are extremely interesting in the light of modern notions on the same subjects. He declared emphatically that "the most important duty of the physician is to prevent illness." "Most patients get better without much help from the physician by the power of nature." He emphasized his distrust of using many medicines at the same time in the hope that some of them would do good. He laid it down as a rule: "Employ only one medicine at a time in all your cases and note its effects carefully." He was as wise with regard to medical ethics as therapeutics. He advised a young physician, "Never speak unfavorably of other physicians. Every one of us has his lucky and unlucky hours." It is pleasant to learn that the old gentleman lived to fill out a full hundred years of life, and that in his declining years he was surrounded by the good will and the affection of many who had learned to know his precious qualities of heart and mind. More than of any other class of physicians do we find the large human sympathies of the Jewish physicians of the Middle Ages praised by their contemporaries and succeeding generations.
During the next centuries a number of Jewish physicians became prominent, though none of them until Maimonides impressed themselves deeply upon the medical life of their own and succeeding centuries. Very frequently they were the physicians to royal personages. Zedkias, for instance, was the physician to Louis the Pious and later to his son Charles the Bald. His reputation as a physician was great enough to give him the popular estimation of a magician, but it did not save him from the accusation of having poisoned Charles when that monarch died suddenly. There seem to be no good grounds, however, for the accusation. There were a number of schools of medicine, in Sicily and the southern part of Italy, in which Jewish, Arabian, and Christian physicians taught side by side. One of these teachers was Jude Sabatai Ben Abraham, usually known by the name of Donolo, who was famous both as a writer on medicine and on astronomy. Donolo studied and probably taught at Tarentum, and there were similar schools at Palermo, at Bari, and then later on the mainland at Salerno. The foundation of Salerno, in which Jewish physicians also took part, we shall discuss later in the special chapter devoted to that subject.
One of the great translators whose work meant very much for the medical science of his own and succeeding generations was the distinguished Jewish physician, Faradj Ben Salim, sometimes spoken of as Farachi Faragut or Ferrarius, who was born at Girgenti in Sicily. He made his medical studies in Salerno and did his work under the patronage of Charles of Anjou towards the end of the thirteenth century. His greatest work is the translation of the whole of the "Continens" of Rhazes. The translation is praised as probably the best of its time made in the Middle Ages. Faradj came at the end of a great century, when the intellectual life of Europe had reached a high power of expression, and it is not surprising that he should have proved equal to his environment. This translation has also some additions made by Faradj himself, notably a glossary of Arabian names.
In Spain also Jewish physicians rose to distinction. The most distinguished in the tenth century was Chasdai Ben Schaprut. Like many other of the great physicians of this time, he had studied astronomy as well as the medical sciences. He became the physician of the Caliph Abd-er-Rahman III of Cordova. He seems also to have exercised some of the functions of Prime Minister to the Caliph, and took advantage of diplomatic relations between his sovereign and the Byzantine Emperor to obtain some works of Dioscorides. These he translated into Arabian with the help of a Greek monk, whom he seems also to have secured through the diplomatic relations. Undoubtedly he did much to usher in that enthusiasm for education and study which characterized the next centuries, the eleventh and twelfth, at Cordova in Spain, when such men as Avenzoar, Avicenna, and Averroës attracted the attention of the educational world of the time. Jewish writers have sometimes claimed one of the most distinguished of these, Avenzoar himself, as a Jew, but Hyrtl and other good authorities consider him of Arabic extraction and point to the fact that his ancestors bore the name of Mohammed. This is not absolutely conclusive evidence, but because of it I have preferred to class Avenzoar among the Arabian physicians.
The one historical fact of importance for us is that everywhere in Europe at that time Jews were being accorded opportunities for the study and practice of medicine. There are local incidents of persecution, but we are not so far away from the feelings that brought these about as to misunderstand them or to think that they were anything more than local, popular manifestations. The more we know about the details of the medical history of these times the deeper is the impression of academic freedom and of opportunities for liberal education.
Much has been said about the intolerance of ecclesiastical authorities toward the Jews, and of Church decrees that either absolutely forbade their practice of the medical profession and their devotion to scientific study, or at least made these pursuits much more difficult for them than for others. Of course it has to be conceded, even by those who most insistently urge the existence of formal legislation in the matter, that in spite of these decrees and intolerance and opposition, Jews continued to practise medicine and to be the chosen physicians of kings and even of high ecclesiastical dignitaries, as well indeed of the Popes themselves. This, it is usually declared, must be attributed to the surpassing skill of the Jewish physicians, causing men to overcome their prejudices and override even their own legal regulations. There is no doubt at all about the skill of Jewish physicians at many times during the Middle Ages. There is no doubt also of the sentiment of opposition that often developed between the Christian peoples and the Jews. Any excuse is good enough to justify men, to themselves at least, in putting obstacles in the paths of those who are more successful than they are themselves. Religion often became a cloak for ill-will and persecution.
The state of affairs that has been presumed however, according to which laws and decrees were being constantly issued forbidding the practice of medicine to Jews by the ecclesiastical authorities, while at the same time they themselves and those who were nearest to them were employing Jewish physicians, is an absurdity that on the face of it calls for investigation of the conditions and from its very appearance would indicate that the ordinary historical assumption in the matter must be wrong.
I have been at some pains, then, to try to find out just what were the conditions in Europe with regard to the practice of medicine by the Jews. There is no doubt that at Salerno, where the influence of the Benedictines was very strong and where the influence of the Popes and the ecclesiastical authorities was always dominant, full liberty of studying and teaching was from the earliest days allowed to the Jews. Down at Montpellier it seems clear that Jewish physicians had a large part in the foundation of the medical school,