Aristotle

The more we learn, the more we realize we do not know.

Happiness is the meaning and the purpose of life, the whole aim and end of human existence.

We are what we repeatedly do. Excellence, then, is not an act, but a habit.

The greatest virtues are those which are most useful to other persons.

The ultimate value of life depends upon awareness and the power of contemplation rather than upon mere survival.

It is not enough to win a war; it is more important to organize the peace.

The good for man is an activity of the soul in accordance with virtue.

The aim of art is to represent not the outward appearance of things, but their inward significance.

It is the mark of an educated mind to be able to entertain a thought without accepting it.

Knowing yourself is the beginning of all wisdom.