The most necessary learning is that which unlearns evil.
We must not contradict, but instruct him that contradicts us; for a madman is not cured by another running mad also.
Wealth and poverty do not lie in a man's estate, but in men's souls.
How to get rid of having anything to unlearn.
Not to unlearn what you have learned is the most necessary kind of learning.
Royalty does good and is badly spoken of.