The inventory, the value of my company, walks out the door every evening.

I don't think I would have spent time learning about the immune system if understanding vaccines weren't something I considered very important.

Billionaires should never be responsible for solving problems, because they're not the government.

Creating a piece of software is always complicated because you're doing something new. If you just wanted something that had been done before you'd just use that old piece of software. So there are no repetitive tasks.

I'm a great believer that any tool that enhances communication has profound effects in terms of how people can learn from each other, and how they can achieve the kind of freedoms that they're interested in.

About three million computers get sold every year in China, people don't pay for the software. Someday they will, though. And as long as they're going to steal it, we want them to steal ours. They'll get sort of addicted, and then we'll somehow figure out how to collect sometime in the next decade.

In ninth grade, I came up with a new form of rebellion. I hadn't been getting good grades, but I decided to get all A's without taking a book home. I didn't go to math class, because I knew enough and had read ahead, and I placed within the top 10 people in the nation on an aptitude exam.