You can never learn anything that you did not already know

It is the mark of an educated mind to expect that amount of exactness which the nature of the particular subject admits. It is equally unreasonable to accept merely probable conclusions from a mathematician and to demand strict demonstration from an orator.

People do not naturally become morally excellent or practically wise. They become so, if at all, only as the result of lifelong personal and community effort.

It is our actions and the soul's active exercise of its functions that we posit (as being Happiness).

The seat of the soul and the control of voluntary movement - in fact, of nervous functions in general, - are to be sought in the heart. The brain is an organ of minor importance.

for we are inquiring not in order to know what virtue is, but in order to become good, since otherwise our inquiry would have been of no use

The purpose of art is to represent the meaning of things. This represents the true reality, not external aspects.