What is love except another name for the use of positive reinforcement? Or vice versa.

A failure is not always a mistake, it may simply be the best one can do under the circumstances. The real mistake is to stop trying.

The speaker does not feel the grammatical rules he is said to apply in composing sentences, and men spoke grammatically for thousands of years before anyone knew there were rules.

A child who has been severely punished for sex play is not necessarily less inclined to continue; and a man who has been imprisoned for violent assault is not necessarily less inclined toward violence.

A culture must be reasonably stable, but it must also change, and it will presumably be strongest if it can avoid excessive respect for tradition and fear of novelty on the one hand and excessively rapid change on the other.

In the world at large we seldom vote for a principle or a given state of affairs. We vote for a man who pretends to believe in that principle or promises to achieve that state. We don't want a man, we want a condition of peace and plenty-- or, it may be, war and want-- but we must vote for a man.

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