Your most unhappy customers are your greatest source of learning.

I like my job because it involves learning. I like being around smart people who are trying to figure out new things. I like the fact that if people really try they can figure out how to invent things that actually have an impact.

Certainly there's a phenomenon around open source. You know free software will be a vibrant area. There will be a lot of neat things that get done there.

I have an excellent memory, a most excellent memory.

The most amazing philanthropists are people who are actually making a significant sacrifice.

Harnessing steam power required many innovations, as William Rosen chronicles in the book 'The Most Powerful Idea in the World.'