The very man who has argued you down, will sometimes be found, years later, to have been influenced by what you said

A moderately bad man knows he is not very good; a thoroughly bad man thinks he is all right.

A young man who wishes to remain a sound atheist cannot be too careful of his reading.

The universe rings true whenever you fairly test it.

Never, in peace or war, commit your virtue or your happiness to the future.

You never know how much you really believe anything until its truth or falsehood becomes a matter of life and death to you.