The human body is a magazine of inventions, the patent office, where are the models from which every hint is taken. All the tools and engines on earth are only extensions of its limbs and senses.

It is not what talents or genius a man has, but how he is to his talents, that constitutes friendship and character. The man thatstands by himself, the universe stands by him also.

Don't set out to teach theism from your natural history... You spoil both.

Silence is a solvent that destroys personality, and gives us leave to be great and universal.

Good as is discourse, silence is better and shames it.

At the gates of the forest, the surprised man of the world is forced to leave his city estimates of great and small, wise and foolish.

To different minds, the same world is a hell, and a heaven.