And so it is thought that these faculties are natural, and that while nature never makes a man wise, she does endow men with judgment and intelligence and reason. This is shown by the fact that these powers are believed to accompany certain periods of life, and that a certain age is said to bring reason and judgment, implying that they come by nature.

(The intuitive reason, then, is both beginning and end; for demonstration both starts from and terminates in these ultimate truths.)

And on this account we ought to pay the same respect to the undemonstrated assertions and opinions of men of age and experience and prudence as to their demonstrations. For experience has given them a faculty of vision which enables them to see correctly. 163

We have said, then, what prudence is, and what wisdom is, and what each deals with, and that each is the virtue of a different part of the soul.