Judah ben Saul ibn Tibbon
Born in Granada, he left Spain in 1150, probably on account of persecution by the Almohades, and went to Lunel in southern France.Against the latter his chief complaint is that he never initiated his father into his literary or business affairs, never asked for his advice, and, in fact, hid everything from him.He further advises his son to observe rigorously the laws of diet, lest he, like others, become ill frequently in consequence of intemperate and unwholesome eating, which would not fail to engender mistrust in him as a physician on the part of the general public.He adds: I have collected a large library for thy sake so that thou needest never borrow a book of any one.Take care also of the loose, separate leaves in thy books, because they contain exceedingly important things which I myself have collected and written down.