Science, not religion, has taught me my most useful values, among them intellectual honesty. It is better to go without answers than to accept those that merely resolve puzzlement.

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.

A person who has been punished is not thereby simply less inclined to behave in a given way; at best, he learns how to avoid punishment.

Give me a child and I'll shape him into anything.

The major difference between rats and people is that rats learn from experience.

Education is what survives when what has been learned has been forgotten.

Behavior is determined by its consequences.

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

Behavior is shaped and maintained by its consequences

The way positive reinforcement is carried out is more important than the amount.

It is not a question of starting. The start has been made. It's a question of what's to be done from now on.

There is safety in numbness– there is solace in sleep.

The kingdom mentality should be discovered, cultivated and consciously guide the way of life

When I was young I used to listen to everything.

I got to work with my wife, Lena Olin, for the first time, which was great. I thought it might be difficult in some way to talk to one's wife in a different way but it was so not forced.

It's not common for a woman on television, especially if she's the mom of the family, to be funny. She's usually a straight man or foil.

The fact that you were essentially dead does not register until you begin to come alive.

Of the 22 industrialized nations of the world, we're dead last in per capita giving to poor people.

Learning to be an effective leader is no different than learning to be an effective person. And that's the hard part

I would travel down to Hell and wrestle a film away from the devil if it was necessary.

We waste our lights in vain, like lamps by day.