Rule 1: All rules can be broken. Many (ex-legal and ethical) should be. Most people won't.

My own theory is that we are in the middle of a dramatic and broad technological and economic shift in which software companies are poised to take over large swathes of the economy

In the startup world, you're either a genius or an idiot. You're never just an ordinary guy trying to get through the day

In short, software is eating the world

My goal is not to fail fast. My goal is to succeed over the long run. They are not the same thing.

All's fair in love, war and ride-sharing.

Innovation accelerates and compounds. Each point in front of you is bigger than anything that ever happened.

Over the next 10 years, I expect many more industries to be disrupted by software, with new world-beating Silicon Valley companies doing the disruption in more cases than not.

Health care and education, in my view, are next up for fundamental software-based transformation.

A lot of things you want to do as part of daily life can now be done over the Internet.

People who tell computers what to do, and people who are told by computers what to do.

Whenever you feel exhausted, take time to relax, refresh and recharge.

Both men and women remain in dysfunctional, loveless relationships when it is materially opportune.

As long as you keep secrets and suppress information, you are fundamentally at war with yourself.

When you say No, you also become a role model of healthy boundaries for others (especially your children).

People are shaped by friendship as much as by romance.

It is an attention-getter. I mean, its hard to ignore a woman lugging a cello around.

You're brave. You are the bravest person I know, and you are my friend. I don't care if you are imaginary.

A man should make all he can, and give all he can.

I think of myself as no more than 60. What I could do at 60, I can still do now.

Scholarship was one thing, drudgery another. I very soon concluded that nothing would induce me to read, let alone make notes on, hundreds and hundreds of very, very, very boring books.