Science is a willingness to accept facts even when they are opposed to wishes.

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.

Nothing will remain except space and time.

Before, I could only guess oh who I was. Now, thanks to my art, I know who I am.

There's a lot of research behind the scenes that you don't get to see, but I have an instinct that my dad nurtured from when I was born. I was very lucky then.

Looking at these issues as a businessman, I believe that investing in the world's poorest people is the smartest way that our government spends money.

or those who have one, please use your voice. So many of us don't have that ability.

I can't do anything! I can't even have an English muffin!

I got back to my hometown, and everyone is like, "I wish I could retire at 39." So they put it in perspective.

When women are economically empowered, the power balance changes in all areas of life.

I really enjoyed working on the first one [Batman franchise] and I wish I could have worked with Chris Nolan again and I hope to work with him again.

In terms of the fantasy wedding thing, I can kind of cross off the island beach thing. Maybe at sunset or something.