When I was 19 years old, I wrote my first book. I took a computer science class, and the book was garbage. I thought I could write a better one, so I did.

If you can’t be persuasive to get people to believe your crazy idea, you can just go ahead and build it.

We tend to believe that things are impossible that are very possible.

Everyone needs someone to tell them not to wear so much Prada.

People who solve problems are happier.

I am absolutely confident that St. Louis can attract major players in technology and make the companies that are here blossom.

I kiss your tear-stained cheeks, tasting the saltiness of a hidden sea of sorrow.

To realize one’s destiny is a person’s only real obligation.

Maybe you’re worried that I won’t seduce you?

There is no need for advertisements to look like advertisements. If you make them look like editorial pages, you will attract about 50 per cent more readers.

I just started playing music on the street and walking around with a fiddle, and I think that's kind of when I started being serious - or as serious as it's going to get.

I love physics with all my heart ... It is a kind of personal love, as one has for a person to whom one is grateful for many things.

A big book is like a serious relationship; it requires a commitment.

I know that if I have been working on one paragraph and I have written it three times, it goes in the bin. Unless it comes straight out, it is wrong, it is awkward, it does not fit.

Love the world With your heart's dreams. Serve the world With your life's promises.

To keep a faith pure, man had better retire to a monastery.