According to one biographer, “by the time he was 14 years of age, he had learned Greek, Latin, and Hebrew, and he had an ample knowledge of philosophy, mathematics, and theology. ”
Ühe biograafi sõnul „oli ta 14 aasta vanuseks saades juba omandanud kreeka, ladina ja heebrea keele ning tal olid laialdased teadmised filosoofia, matemaatika ja teoloogia vallas ”.