On Rewards and Punishments (25-26)

This is that which makes gods of inanimate things, a great and almost impregnable fortification by the sophistries and manoeuvres of whom every city is allured, and since it takes especial hold on the souls of the young. For having entered into them it establishes itself and dwells in them from the earliest infancy to old age, subduing all those on whom God has not poured the beams of his truth. But pride is the adversary of truth, and is hard to be removed, though when it is subdued by a stronger power than itself then it does depart.

And this class of men is small, indeed, in number; but in power it is very numerous and very great, so that even the whole circle of the earth cannot contain it. And it reaches even to heaven; for as it is possessed of an indescribable love of contemplation and of being always among divine objects, when it has thoroughly investigated and explained all that nature which is perceptible to the sight, it immediately proceeds onwards to that which is incorporeal and appreciable only by the intellect, without requiring the assistance of any one of the outward senses, indeed discarding even the irrational parts of the soul, and employing those parts only which are called mind and reason.