Money is something you got to make in case you don't die.

I've always wanted to be a fighter pilot. But I don't want to kill people. I'd hate to.

One of the things we did at PayPal was collaborative filtering and machine learning: looking at patterns of human behavior. We used it there to predict when people would try to cheat the system to get money. But you can predict pretty much any behavior with a certain amount of accuracy.

Media is very different from financial services. People are very fickle and very vocal. They believe that things should be one way and not the other. It's still very rewarding to build products for huge audiences. It feels like you're making an impact.

General reader feedback is usually pretty worthless. 99% of people give feedback that is irrelevant, stupid, or just flat out wrong. But that 1% of people who give good feedback are invaluable.

He who is infatuated with 'Man' leaves persons out of account so far as that infatuation extends, and floats in an ideal, sacred interest. Man, you see, is not a person, but an ideal, a spook.