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Education is the most powerful weapon which you can use to change the world.

You can’t control what happens to you, but you can control how you respond.

"The only thing to do with good advice is to pass it on. It is never of any use to oneself."

We must balance economic growth with environmental stewardship.

Let me explain. I think it would be very unusual for anyone here, or anyone watching, to be envious of the Queen of England. Even though she is much richer than any of you are, and she's got a very large house, the reason why we don't envy her is because she's too weird.