If you don't behave as you believe, you will end by believing as you behave.

The pendulum of the mind oscillates between sense and nonsense, not between right and wrong.

Learn from the mistakes of others. You can never live long enough to make them all yourself.

It is man that makes truth great, not truth that makes man great.

Wisdom is not the product of schooling, but of the lifelong attempt to acquire it.

If you do what you've always done, you'll get what you've always gotten.

Sometimes you will never know the value of a moment until it becomes a memory.

Choose rather to be strong of soul than strong of body.

Just remember, once you're over the hill you begin to pick up speed.

Science is organized knowledge. Wisdom is organized life.

None but ourselves can free our minds.

I have no desire to make windows into mens souls

Don't take tomorrow to bed with you.

Men become wise just as they become rich, more by what they save than by what they receive.

Whatever you think the world is withholding from you, you are withholding from the world.

Those who know, do. Those that understand, teach.

This is something basic to be understood: the ego must come to a peak, it must be strong, it must have attained an integrity only then can you dissolve it.

Compassion is the basis of morality.

Thought can be so seductive and hypnotic that it absorbs your attention totally, so you become your thoughts.

If you only read the books that everyone else is reading, you can only think what everyone else is thinking.

Don't criticize what you don't understand, son. You never walked in that man's shoes.