Bitcoin is a technological tour de force

Philanthropy is fun and fulfilling.

I'm serious when I do my work. I'm not serious when I'm home with my kids.

We were young, but we had good advice and good ideas and lots of enthusiasm.

Even with cameras being very cheap, one thing that researchers noticed was that you look really bad in a videoconference image because the lighting is bad and you get shadows and things.

Learning from mistakes and constantly improving products is a key in all successful companies.

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