True happiness comes from sharing your gifts with others.

The conversation about coal must move beyond 'pro' or 'anti'—we need solutions, not slogans.

I don't chase trends, only classics.

"The greatest threat to the planet is the idea that someone else will save it."

To be a moral human being is to pay, be obliged to pay, certain kinds of attention.

A mathematician is a person who can find analogies between theorems; a better mathematician is one who can see analogies between proofs and the best mathematician can notice analogies between theories.