All this sensory input, which begins in the brain, has its effect throughout the body.

Although a man may have no jurisdiction over the fact of his existence, he can hold supreme command over the meaning of existence for him.

The main trouble with despair is that it is self-fulfilling. People who fear the worst tend to invite it. Heads that are down can't scan the horizon for new openings. Bursts of energy do not spring from a spirit of defeat. Ultimately, helplessness leads to hopelessness.

The conquest of war and the pursuit of social justice... must become our grand preoccupation and magnificent obsession.

Your heaviest artillery will be your will to live. Keep that big gun going.

The essence of man is imperfection.

The need is not to amputate the ego ... but to transcend it.