People in business understand paying money to be more efficient. You can bootstrap markets where the devices are too expensive at first because these are so valuable to some people.

Your most unhappy customers are your greatest source of learning.

It is hard to smash a computer when you're laughing.

Vaccination is one of the easiest things on the way to development. It's much easier than roads and a great education system. It's very basic. It's one of the first things you want to get right.

Sometimes we do get taken by surprise. For example, when the Internet came along, we had it as a fifth or sixth priority.

There are ecosystems like coral reefs [at risk] through ocean acidification. Those are valuable things that we should protect.

When you write a piece of software you assume a certain type of hardware. If you assume hardware that's too powerful then you can't sell many copies cause very few people have that machine. If you assume hardware that's too simple your product can't do as much.