Mobile is the perfect example of what is enabling economic growth in the technology sector.

The single most important top-level trend is the shift to mobile.

Ignore your mistakes. The number one thing to worry about is -Am I doing what I'm good at?

You can have successful teams where people hate but deeply respect each other; the opposite (love but not respect among team members) is a recipe for disaster.

Having a highly homogeneous background, education, values, preferences, etc, in the very early team is better than not - cuts down on time-wasting arguments.

The world is now awash in data and we can see consumers in a lot clearer ways.

We're all put on Earth for a limited amount of time. Am I using in a way that is great, or good enough, or wasteful?

The notion that diversity in an early team is important or good is completely wrong. You should try to make the early team as non-diverse as possible.

Being an entrepreneur is not about being in love with an idea, it's about being in love with running a company.

You can't get married to any one particular plan. That is the biggest lesson I learned at PayPal.

Facebook is so ubiquitous now that it's like another manifestation of the web itself.

The ultimate foundation of spirituality is the recognition that there can't be such a thing as a purposeful life in a purposeless universe.

I will feel no guilt on shutting my door to those who didn't listen.

There's nothing you can do, Sirus. No one can do this for me, and no one can swoop in and rescue me every time I'm challenged. I have to do this on my own.

Waiting, done at really high speeds, will frequently look like something else.

[T]he people of Iraq have spoken to the world, and the world is hearing the voice of freedom from the center of the Middle East.

I am a butterfly drunk with life. I don't know where to soar, but I won't allow life to clip my beautiful wings.

I do just love the characters in sci-fi, but not necessarily the fact that it's sci-fi.

Try your best to treat others as you would wish to be treated yourself, and you will find that this is the shortest way to benevolence

Where there is a woman there is magic.

But evil is a cunning force. It can find the weakness in any man, even the bravest. [...] It only takes a single weak moment to let evil in.