Man is not the creature of circumstances. Circumstances are the creatures of men.

A person with a clear purpose will make progress on even the toughest road. A person with no purpose will make no progress on even the smoothest road.

The worst form of inequality is to try to make unequal things equal.

Fortunately psychoanalysis is not the only way to resolve inner conflicts. Life itself still remains a very effective therapist.

The world is a comedy to those that think, and a tragedy to those that feel.

I find the great thing in this world is not so much where we stand, as in what direction we are moving: To reach the port of heaven, we must sail sometimes with the wind and sometimes against it—but we must sail, and not drift, nor lie at anchor.

Never put off till tomorrow the fun you can have today.

Intellectual growth should commence at birth and cease to exist at death.

Life without love is like a tree without blossoms or fruit.

If everyone is thinking alike, then somebody isn't thinking.

You are today where your thoughts have brought you; you will be tomorrow where your thoughts take you.

Only when we realize that there is no eternal, unchanging truth or absolute truth can we arouse in ourselves a sense of intellectual responsibility.

A man is as big as the measure of his thinking.

If you spend too much time thinking about a thing, you'll never get it done.

Men should strive to think much and know little.

The value of a college education is not the learning of many facts but the training of the mind to think.