The philosophical and mathematical commentaries of Proclus on the first book of Euclid's elements (Vol. 1 of 2) : $b To which are added, A history of the restoration of Platonic theology, by the latter Platonists: And a translation from the Greek of Proclus's Theological elements
Plato · en
But having, for a short space of time, in Lycia, applied himself
to grammar, he went to Alexandria in Egypt, bringing with him very
singular moral virtues, by which he excited towards himself the love
of the masters resident in that place. Hence Leonas the rhetorician,
who derived (as I think) his lineage from Isaurus, and was illustrious
among many of that profession, who were then at Alexandria, not only
made him a partaker of his studies, but thought him worthy to become
his domestic, and ordered that he should be supplied with food,
together with his wife and children, no otherwise than if he had been
his[46] true son. He likewise took care to procure him the notice of
the principal men in Egypt, who being wonderfully delighted with the
acumen of the youth’s ingenuity, and with the elegance and integrity
of his morals, reckoned him among their greatest friends. But he was
also instructed by Orion the grammarian, whose ancestors discharged
the sacerdotal office among the Egyptians, and who had made such a
progress in the knowledge of his art, that he composed elaborate books
on this subject, which he left not without advantage to posterity. He
also went to the schools of the Roman preceptors, and made a great
progress in that language; for he was at first led to the study of his
father’s profession, in which he was illustrious, his employment being
the study of law in the royal city. But when it appeared how vehemently
the young man was delighted with the study of rhetoric, as he had not
yet touched the writings of the philosophers, he both acquired great
glory from his acquisitions, and became the admiration of his fellow
pupils and masters, on account of the elegance of his discourse, and
his celerity in perceiving; and from his exhibiting more the habit and
industry of the master, than that of the scholar.