Behavior is shaped and maintained by its consequences

Give me a child and I'll shape him into anything.

That's all teaching is; arranging contingencies which bring changes in behavior.

A disappointment is not generally an oversight. It might just be the best one can do the situation being what it is. The genuine error is to quit attempting.

In a world of complete economic equality, you get and keep the affections you deserve. You can't buy love with gifts or favors, you can't hold love by raising an inadequate child, and you can't be secure in love by serving as a good scrub woman or a good provider.

Old age is rather like another country. You will enjoy it more if you have prepared yourself before you go.

The juvenile delinquent does not feel his disturbed personality. The intelligent man does not feel his intelligence or the introvert his introversion.