Without encryption, you and I wouldn't be able to do our banking online. We wouldn't be able to buy things online, because your credit cards - they've probably been ripped off anyway, but they would be ripped off left and right every day if there wasn't encryption.

A great product isn't just a collection of features. It's how it all works together.

Certainly some things that are very good can sometimes be used in a bad way.

I just want to build great products.

If you're worried about messaging, people will just move to something else. You know if you legislate against Facebook and Apple and Google and whatever else in the US, they'll just use something else. So are we really safer then? I would say no. I would say we're less safe, because now we've opened up all of the infrastructure for people to go wacko at.

Creativity is people who care enough to keep thinking about something until they find the simplest way to do it.

Honestly, we’ll compete with everybody. I love competition. As long as people invent their own stuff, I love competition.