A friend is simply one soul in two bodies.

Life is full of chances and changes, and the most prosperous of men may in the evening of his days meet with great misfortunes.

There are no experienced young people. Time makes experience.

The duty of rhetoric is to deal with such matters as we deliberate upon without arts or systems to guide us, in the hearing of persons who cannot take in at a glance a complicated argument or follow a long chain of reasoning.

Excellence or virtue is a settled disposition of the mind that determines our choice of actions and emotions and consists essentially in observing the mean relative to us ... a mean between two vices, that which depends on excess and that which depends on defect.

It is not always the same thing to be a good man and a good citizen.

The continuum is that which is divisible into indivisibles that are infinitely divisible.