"The only way to tell whether a given event is reinforcing to a given organism under given conditions is to make a direct test."

"The majority of people don't want to plan. They want to be free from the responsibility of planning."

"Religion is just another form of behavioral control."

"The baby is an exquisite instrument, and we must learn to play it properly."

"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."