The strength of any plan depends on the time. Circumstances and things eternally shift and change.

Lay a beam between these two towers of such width as we need to walk on: there is no philosophical wisdom of such great firmness that it can give us courage to walk on it as we should if it were on the ground.

No one but yourself knows whether you are cowardly and cruel, or loyal and devout; others do not see you; they surmise you by uncertain conjectures; they perceive not so much your nature as your art.

We wake sleeping, and sleep waking. I do not see so clearly in my sleep; but as to my being awake, I never found it clear enough and free from clouds.

Intelligence is required to be able to know that a man knows not.

The archer who overshoots his mark does no better than he who falls short of it.

A man must live in the world and make the best of it, such as it is.