"The fact that people are happy, that they feel free, that they do what they want to do, is not a guarantee that they are behaving effectively or that they are doing what is best for them."

"The only way to get a good idea is to get a lot of ideas."

"No one asks how to motivate a baby. A baby is an inexhaustible source of motivation—for itself."

"We shouldn't think about what people feel, but about what they do."

"The future of man is in his own hands."