"Rewards and punishments are not opposites at all; they are two sides of the same coin. And it is a coin that does not buy very much."

“Punishment and reward proceed from basically the same psychological model, one that conceives of motivation as nothing more than the manipulation of behavior.”

“Someone who thinks well of himself is said to have a healthy self-concept and is envied. Someone who thinks well of his country is called a patriot and is applauded. But someone who thinks well of his species is regarded as hopelessly naïve and is dismissed.”

“Children learn how to make good decisions by making decisions, not by following directions”

“Nothing about the concept of positive interdependence requires that members of the group avoid conflict, and there are good data to suggest that they should not do so.”

“Very few things are as dangerous as a bunch of incentive-driven individuals trying to play it safe.”

“It doesn't matter how motivated students are; what matters is how students are motivated”