Time sanctifies everything; even the most arrant theft in the hands of the robber's grandchildren becomes sacred and inviolable property.

The individual succumbs, but he does not die if he has left something to mankind.

I came to think of myself, not as a dance and chaos of molecules, but as a brief and minute portion of that majestic process

So the story of man runs in a dreary circle, because he is not yet master of the earth that holds him.

To give life a meaning, one must have a purpose larger than self.

Civilizaton is the interval between Ice Ages.

Knowledge is power but only wisdom is liberty.