Indolence is the dry rot of even a good mind and a good character; the practical uselessness of both. It is the waste of what might be a happy and useful life.

To rule one's anger is well; to prevent it is still better.

Piety and morality are but the same spirit differently manifested. Piety is religion with its face toward God; morality is religion with its face toward the world.

My books are my tools, and the greater their variety and perfection the greater the help to my literary work.

Every parting is a form of death, as every reunion is a type of heaven.

Unbelief, in distinction from disbelief, is a confession of ignorance where honest inquiry might easily find the truth. - "Agnostic" is but the Greek for "ignoramus."

Thoroughly to teach another is the best way to learn for yourself.