Good developers like seeing their products sell in large quantities. They enjoy the competition of doing a better job than the other company, especially if the other company has more people on the project and they're entrenched and people are saying that we don't have a chance of getting in there and... and doing well.

The only thing I understand deeply, because in my teens I was thinking about it, and every year of my life, is software. So I'll never be hands-on on anything except software.

Just in terms of allocation of time resources, religion is not very efficient. There's a lot more I could be doing on a Sunday morning.

here are economies like China's economy where it's less than a tenth [of a percent] today, although it is growing, is quite small, because of the notion that the government takes care of everything, and Europe and China, philanthropy has not been nearly of the same scale.

Bitcoin is a technological tour de force

Most of our competitors were one-product wonders... They would do their one product, but never get their engineering sorted out.

It was really phenomenal [Warren Buffett donation]. It grew out of the friendship that we had and the fact that his plan to have his wife run the foundation and give things away changed when she tragically died.