Seek truth while you are young, for if you do not, it will later escape your grasp
A wise ignorance is an essential part of knowledge.
Geometry existed before creation.
All men are by nature equal, made all of the same earth by one Workman; and however we deceive ourselves, as dear unto God is the poor peasant as the mighty prince.
The Earth is like one of those balls made of twelve pieces of skin.
Thus rhetoric, it seems, is a producer of persuasion for belief, not for instruction in the matter of right and wrong ... And so the rhetorician's business is not to instruct a law court or a public meeting in matters of right and wrong, but only to make them believe.