Guard well your spare moments. They are like uncut diamonds. Discard them and their value will never be known. Improve them and they will become the brightest gems in a useful life.

Many photographers think they are photographing nature when they are only caricaturing her.

Nothing divine dies. All good is eternally reproductive. The beauty of Nature re-forms itself in the mind, and not for barren contemplation, but for new creation.

In the highest civilization, the book is still the highest delight. He who has once known its satisfactions is provided with a resource against calamity.

The power men possess to annoy me I give them by a weak curiosity

The astronomers said, 'Give us matter and a little motion and we will construct the universe. It is not enough that we should have matter, we must also have a single impulse, one shove to launch the mass and generate the harmony of the centrifugal and centripetal forces.' ... There is no end to the consequences of the act. That famous aboriginal push propagates itself through all the balls of the system, and through every atom of every ball.

I have heard that death takes us away from ill things, not from good. I have heard that when we pronounce the name of man we pronounce the belief of immortality.