The journey is difficult, immense. We will travel as far as we can, but we cannot in one lifetime see all that we would like to see or to learn all that we hunger to know.

If there is magic on this planet, it is contained in water.

I am older now, and sleep less, and have seen most of what there is to see and am not very much impressed any more, I suppose, by anything.

After chiding the theologian for his reliance on myth and miracle, science found itself in the unenviable position of having to create mythology of its own: namely, the assumption that what, after long effort, could not be proved to take place today had, in truth, taken place in the primeval past.

The plan is not what you think.

Perhaps a creature of so much ingenuity and deep memory is almost bound to grow alienated from his world, his fellows, and the objects around him. He suffers from a nostalgia for which there is no remedy upon earth except as it is to be found in the enlightenment of the spirit--some ability to have a perceptive rather than an exploitive relationship with his fellow creatures.

Since the first human eye saw a leaf in Devonian sandstone and a puzzled finger reached to touch it, sadness has lain over the heart of man. By this tenuous thread of living protoplasm, stretching backward into time, we are linked forever to lost beaches whose sands have long since hardened into stone. The stars that caught our blind amphibian stare have shifted far or vanished in their courses, but still that naked, glistening thread winds onward. No one knows the secret of its beginning or its end. Its forms are phantoms. The thread alone is real; the thread is life.