The most necessary learning is that which unlearns evil

The most useful piece of learning for the uses of life is to unlearn what is untrue.

I learned the bad guys are not always bad, the good guys are not always good, and to quote Captain Barbossa, the parameters are like rules, mostly guidelines. And that it takes a little bit of bad boy to fight the evil in the world.
--Terri Mitchell

Not to unlearn what you have learned is the most necessary kind of learning.

I am sadly afraid that I must have done some wicked thing.

Quarrels often arise in marriages when the bridal gifts are excessive.