Nothing can be more absurd than the practice that prevails in our country of men and women not following the same pursuits with all their strengths and with one mind, for thus, the state instead of being whole is reduced to half.

The only thing worse than suffering an injustice is committing an injustice.

Human behavior flows from three main sources: desire, emotion, and knowledge.

To think truly is noble and to be deceived is base.

Those who practice philosophy in the right way are in training for dying and they fear death least of all men.

Knowledge becomes evil if the aim be not virtuous.

Pleasure is the greatest incentive to evil.