Thought makes the whole dignity of man; therefore endeavor to think well, that is the only morality.

If magistrates had true justice, and if physicians had the true art of healing, they would have no occasion for square caps; the majesty of these sciences would itself be venerable enough.

The end point of rationality is to demonstrate the limits of rationality.

Not only do we know God by Jesus Christ alone, but we know ourselves only by Jesus Christ. We know life and death only through Jesus Christ. Apart from Jesus Christ, we do not know what is our life, nor our death, nor God, nor ourselves.

Our nature lies in movement; complete calm is death.

Most of man's trouble comes from his inability to be still.

All this visible world is but an imperceptible point in the ample bosom of nature.