Let him who has granted a favour speak not of it; let him who has received one, proclaim it.
No book can be so good, as to be profitable when negligently read.
A physician is not angry at the intemperance of a mad patient, nor does he take it ill to be railed at by a man in fever. Just so should a wise man treat all mankind, as a physician does his patient, and look upon them only as sick and extravagant.
He worships God who knows him.
We become wiser by adversity; prosperity destroys our appreciation of the right.
The important thing about a problem is not its solution, but the strength we gain in finding the solution