It is a funny thing what the brain will do with memories and how it will treasure them and finally bring them into odd juxtapositions with other things, as though it wanted to make a design, or get some meaning out of them, whether you want it or not, or even see it.

I love forms beyond my own, and regret the borders between us

For the first time in four billion years a living creature had contemplated himself and heard with a sudden, unaccountable loneliness, the whisper of the wind in the night reeds.

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.

It is frequently the tragedy of the great artist, as it is of the great scientist, that he frightens the ordinary man.

When the human mind exists in the light of reason and no more than reason, we may say with absolute certainty that Man and all that made him will be in that instant gone.

We think we learn from teachers, and we sometimes do. But the teachers are not always to be found in school or in great laboratories. Sometimes what we learn depends upon our own powers of insight.