We're in a period of uncertainty about [Donald Trump] administration policies and the range of what might happen is particularly higher. I don't think that these R&D and innovation budgets will be substantially reduced.

I realized about 10 years ago that my wealth has to go back to society. A fortune, the size of which is hard to imagine, is best not passed on to one's children. It's not constructive for them.

I believe it’s not only possible to eradicate malaria; I believe it’s necessary. Ultimately, the cost of controlling it endlessly is not sustainable. The only way to stop this disease is to end it forever.

We have to find a way to make the aspects of capitalism that serve wealthier people serve poorer people as well.

I'm never fully satisfied with any Microsoft product.

(On being the world's richest man) I wish I wasn't ... There's nothing good that comes out of that. You get more visibility as a result of it.

People who say they don't see the acceleration of innovation is a wilful blindness. We are innovation at a wonderful speed for the basic things we think everyone should get.