Science is organized knowledge. Wisdom is organized life.

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

Education is a progressive discovery of our own ignorance.

To speak ill of others is a dishonest way of praising ourselves. . . let us be above such transparent egotism.

How much more suffering is caused by the thought of death than by death itself.

Tolerance grows only when faith loses certainty; certainty is murderous.

Those who have suffered much become very bitter or very gentle.

Sixty years ago I knew everything; now I know nothing; education is a progressive discovery of our own ignorance.

Forget mistakes. Forget failure. Forget everything except what you're going to do now and do it. Today is your lucky day