I hope you either take up parachute jumping or stay out of single motored airplanes at night.

Whether outwardly or inwardly, whether in space or time, the farther we penetrate the unknown, the vaster and more marvelous it becomes.

Our survival, the future of our civilization, possibly the existence of mankind, depends on American leadership

Life is like a landscape. You live in the midst of it but can describe it only from the vantage point of distance.

If we can combine our knowledge of science with the wisdom of wildness, if we can nurture civilization through roots in the primitive, man's potentialities appear to be unbounded.

Living in dreams of yesterday, we find ourselves still dreaming of impossible future conquests.

Then what am I - the body substance which I can see with my eyes and feel with my hands? Or am I this realization, this greater understanding which dwells within it, yet expands through the universe outside; a part of all existence, powerless but without need for power; immersed in solitude, yet in contact with all creation? There are moments when the two appear inseparable, and others when they could be cut apart by the merest flash of light.