If you take from the most wealthy and give to the least wealthy, it's good. It tries to balance out.

Every new change forces all the companies in an industry to adapt their strategies to that change.

The only role other than paying their taxes, whatever those are, the only role for philanthropy broadly - of which the rich should give disproportionately - the more, the better - and I think there is a positive trend in that direction - there are certain risk-taking things, like trying out a new type of charter school or funding a new kind of medicine.

Philanthropy is fun and fulfilling.

A breakthrough in machine learning would be worth ten Microsofts.

We really have to work hard to remind people even though this is far away, that's it's probably the most generous thing governments have ever come together to do. Since World War II, this new institution is the only one that's emerged and is saving all these lives.

I don't think culture is something you can describe.