If you're old, don't try to change yourself, change your environment.

The strengthening of behavior which results from reinforcement is appropriately called 'conditioning'. In operant conditioning we 'strengthen' an operant in the sense of making a response more probable or, in actual fact, more frequent.

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

The one fact that I would cry form every housetop is this: the Good Life is waiting for us - here and now.

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

A person's genetic endowment, a product of the evolution of the species, is said to explain part of the workings of his mind and his personal history the rest.

Let men be happy, informed, skillful, well behaved, and productive.