Behavior is determined by its consequences.

Fame is also won at the expense of others. Even the well-deserved honors of the scientist or man of learning are unfair to many persons of equal achievements who get none. When one man gets a place in the sun, the others are put in a denser shade. From the point of view of the whole group there's no gain whatsoever, and perhaps a loss.

Overcrowding can be corrected only by inducing people not to crowd, and the environment will continue to deteriorate until polluting practices are abandoned.

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.

Problem-solving typically involves the construction of discriminative stimuli

An important fact about verbal behavior is that speaker and listener may reside within the same skin.

We have not yet seen what man can make of man.