Pliny complains that no such laws existed in Rome, where a physician was the only man who could commit murder with impunity; "Nulla praeterea lex," he says, "quae puniat inscitium capitalem, nullum exemplum vindictae. Discunt periculis nostris, et experimenta per mortes agunt: medicoque tantum hominem occidisse impunitas summa est." By one of these singular anomalies in public opinion, this supposed divine science was soon considered an ignoble profession. In Rome it was chiefly practised by slaves, freedmen, or foreigners. From the overthrow of the Roman empire till the revival of literature and the arts in Europe, medicine and surgery sought a refuge amongst the Arabians, who studied both branches in common; for, though exiled to the coast of Africa in point of scientific cultivation, it was necessarily cultivated in other countries, and in the greater part of Europe became the exclusive right of ecclesiastics. In time, however, it was gradually wrested from their hands by daily necessities; and every one, even amongst the lowest classes, professed himself a surgeon, and the cure of the hurt and the lame was intrusted to menials and women. As the church could no longer monopolize the art of healing, it became expedient to stigmatize it, although that very faculty had but lately been their boast; but it had fallen within the powers of vulgar and profane comprehension, and therefore was useless to maintain sacerdotal pre-eminence. In 1163, the Council of Tours, held by Pope Alexander III., maintained that the devil, to seduce the priesthood from the duties of the altar, involved them in mundane occupations, which, under the plea of humanity, exposed them to constant and perilous temptations. The edict not only prohibited the study both of medicine and law amongst all that had taken religious vows, but actually excommunicated every ecclesiastic who might infringe the decree. It appears, however, that the temptations of the evil one were still attractive, as Pope Honorius III., in 1215, was obliged to fulminate a fresh anathema on transgressors, with an additional canon, ordaining that, as the church abhorred all cruel or sanguinary practices, not only no priest should be allowed the practice of surgery, but should refuse their benediction to all who professed it.[26]