Death is not the greatest tragedy in life. The greatest tragedy is what dies inside us while we live. We need not fear death. We need fear only that we may exist without having sensed something of the possibilities that lie within human existence.

Death is not the greatest loss in life. The greatest loss is what dies inside us while we live.

We have everything we need, in fact, except the most important thing of all — time to think and the habit of thought.

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

What people most need now is to apply their conversion skills to those things that are essential for their survival. They need to convert facts into logic, free will into purpose, conscience into decision. They need to convert historical experience into a design for a sane world.

The sense of paralysis proceeds not so much out of the mammoth size of the problem but out of the puniness of the purpose.

The eternal quest of the individual human being is to shatter his loneliness.