In the digital age of "overnight" success stories such as Facebook, the hard slog is easily overlooked.

I made 5,127 prototypes of my vaccum before I got it right. There were 5,126 failures. But I learned from each one. That’s how I came up with a solution. So I don’t mind failure.

What I've learned from running is that the time to push hard is when you're hurting like crazy and you want to give up. Success is often just around the corner.

Enjoy failure and learn from it. You never learn from success.

Everyone gets knocked back, no one rises smoothly to the top without hindrance. The ones who succeed are those who say, right, let’s give it another go.

Successes teach you nothing. Failures teach you everything. Making mistakes is the most important thing you can do.

Everyone has ideas. They may be too busy or lack the confidence or technical ability to carry them out. But I want to carry them out. It is a matter of getting up and doing it.

In order to fix it, you need a passionate anger about something that doesn't work well.

Engineering undergraduates should not be charged fees. They should receive grants, not student loans, and the government will get the money back long-term from increased exports.

If you want to do something different, you’re going to come up against a lot of naysayers.

Children want the challenge of difficult tasks - just look how much better they are than their parents on a computer.

Right. Because if you have trouble putting ketchup and mustard on a hot dog, you should totally move on to saving lives.

We must choose between the violence of adults and the smiles of children.

Tupac Shakur always wanted me to smoke weed with him, and I never did it, and I wish I did...That's my biggest regret.

I have nothing against bombastic music, but when it comes to making albums, I'd prefer to make music that has a sort of vulnerable subtlety to it.

I still looked the same - I had a swollen jaw.

I'm just very careful with my words when I write. Obsessively careful. I'm the sort of person who worries about the difference between "slim" and "slender."

And when you feel the heat, the world is at your feet.

I have finished To Kill a Mockingbird. It is now my favorite book of all time, but then again, I always think that until I read another book.

I’ve always loved the experience of working together with other people toward an artistic goal.

Writing checks for charities is necessary and important. But it can't compare with corporal works of mercy, which are infinitely greater.