We enter the world alone, we leave it alone.

Courage is, on all hands, considered as an essential of high character.

Instruction does not prevent wasted time or mistakes; and mistakes themselves are often the best teachers of all.

We must have the real thing before we can have a science of a thing.

Mistakes are often the best teachers.

There are at bottom but two possible religions--that which rises in the moral nature of man, and which takes shape in moral commandments, and that which grows out of the observation of the material energies which operate in the external universe.

A person possessed with an idea cannot be reasoned with.