We wanted flying cars, instead we got 140 characters.

Today's 'best practices' lead to dead ends; the best paths are new and untried.

The most contrarian thing of all is not to oppose the crowd but to think for yourself.

I no longer believe that freedom and democracy are compatible.

The most successful businesses have an idea for the future that's very different from the present.

I do think Bitcoin is the first [encrypted money] that has the potential to do something like change the world.

Every business is successful exactly to the extent that it does something others cannot.

In the '30s, the Keynesian stuff worked at least in the sense that you could print money without inflation because there was all this productivity growth happening. That's not going to work today.

Under perfect competition, in the long run no company makes an economic profit.

The most fundamental reason that even businesspeople underestimate the importance of sales is the systematic effort to hide it at every level of every field in a world secretly driven by it.

Of the six people who started PayPal, four had built bombs in high school.

For too long, and despite what people told me, I had fallen for what the culture said about beauty, youth, features, heights, weights, hair textures, upper arms.

Never pretend to be who you are not. It doesn't take long before the truth gets revealed and you'll be left hurt with the results.

It's not about what you're capable of, it's about what you are willing to endure.

It is impossible for me to envisage a picture as being other than a window, and why my first concern is then to know what it looks out on.

The major problem of life is learning how to handle the costly interruptions.

The language Mr. Obama uses is refreshingly different from that of his predecessor, George W. Bush.

I was an ugly kid; when I was born, after the doctor cut the cord, he hung himself.

You can always become better.

The cruel of heart have their own black happiness.

No wild enthusiast could rest, till half the world like him was possessed.