You have to change from doubter to believer.

I’d tell them, “If you believe in something, go for it, but know that when you go for it there’s a price to be paid. Be ready to pay that price and you can contribute to the welfare of society, and society will acknowledge you and respect you for it. And don’t be afraid. Don’t be afraid.”

Study broadly. Don’t specialize too early. Read history. Sooner or later, you’re going to have to specialize, but within the limits that you have to take obligatory courses to get a degree, keep your general education as broad as you can, because you never know what doors are going to open to new opportunities — ten, 15, 20 years down the road — because of changes in science and technology.

When I went through school, I was in a hurry. I was an economics major as an undergraduate, and I was a finance major in graduate school. I was in a hurry to succeed when I got out in the business world. I’m sorry I didn’t take more courses in the humanities and in history and in the arts.

In every way at every turn, the question we ask ourselves is not what can we do, but what should we do?.”

No big challenge has ever been solved and no lasting improvement has ever been achieved unless people dare to try something different. Dare to think different.