No one's so old that he mayn't with decency hope for one more day.

He invites the commission of a crime who does not forbid it, when it is in his power to do so.

Such is the blindness, nay the insanity of mankind, that some men are driven to death by the fear of it.

While you teach, you learn.

What you think is the summit is only a step up

So live with an inferior as you would wish a superior to live with you.

You cannot escape necessities, but you can overcome them.