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.

I've been developing mobile for years before anybody else really thought it was that important.

The world we are is a secret prison and the secret prison is power.

It's only those who are persistent, and willing to study things deeply, who achieve the Master Work

Physicians of the Utmost Fame were called at once but when they came they answered as they took their fees 'There is no cure for this disease.'

Experience is knowledge. All the rest is information.

You cannot say that you are happy when you don't win.

This tendency to avoid problems and the emotional suffering inherent in them is the primary basis of all human mental illness

If you wish to make a man your enemy, tell him simply, 'You are wrong.' This method works every time.

All truth is profound.

Our most natural feelings are those we are loath to confess, and fatuity is among them.

You chose love like a belief, a faith, a place, a box for one's heart to knock against like a spook in the house.