Like any well designed software product, Windows is designed, developed and tested as an integrated whole.

See the clock only when you have No work.... Don't see the clock when you are working.... Clock is a lock for success

Software is more important than hardware.

People are always coming up to me and saying, 'I heard your dad's speech, and it's really great.' And they'll mention some place I didn't even know my dad was going to.

Our success has really been based on partnerships from the very beginning.

If you think of global public goods like polio eradication, the kind of risk-taking new approach, philanthropy really does have a role to play there, because government doesn't do R&D about new things naturally as much as it probably should, and so philanthropy's there.

There's 20 companies that I have investments in - some batteries, some solar-thermal, one big nuclear thing. We need hundreds and hundreds of companies like that, so that in a 20-year time frame we really are starting to change the energy infrastructure.