A dog has the soul of a philosopher.

Those who reproach injustice do so because they are afraid not of doing it but of suffering it.

To fear death, my friends, is only to think ourselves wise without really being wise, for it is to think that we know what we do not know.

Everything changes and nothing remains still.

Then may we not fairly plead in reply that our true lover of knowledge naturally strives for truth, and is not content with common opinion, but soars with undimmed and unwearied passion till he grasps the essential nature of things with the mental faculty fitted to do so, that is, with the faculty which is akin to reality, and which approaches and unites with it, and begets intelligence and truth as children, and is only released from travail when it has thus reached knowledge and true life and satisfaction?

Who are the true philosophers? Those whose passion is to love the truth.

Virtue is relative to the actions and ages of each of us in all that we do.