But just because you love something, I added to myself, doesn't mean you'll ever be great. Not if you don't work. Most people stink at the things they love.

You can't invent Google, Facebook or the iPod unless you've mastered the basics, are willing to put in long hours and can pick yourself up from the floor when life knocks you down the first 10 times.

I worry that by losing my temper so much and being so harsh and yelling so much that, by example, I will have taught my daughters to be that way, and I'm now constantly telling them not to do that.

There's nothing better for building confidence than learning you can do something you thought you couldn't.

Once you get to the Enlightenment, the way that powers get to be hyperpowers isn't just by conquest. It's through commerce and innovation. Societies like the Dutch Republic and the United States used tolerance to become a magnet for enterprising immigrants.

When my kids wanted to give up on things, I wouldn't let them, and those are lifelong lessons.

Be modest, be humble, be simple.Make sure you come in first so that you have something to be humble about.