"I just want to build something that people find useful."

"You have a lot of privacy controls, and we try to make it so that you can share with exactly the people you want to share with."

"If you just give people a voice, and you give people power, the system will work out."

"It's not enough to just build a good product, you also have to build a great community."

"If you look at the arc of history, it's always gone towards more transparency and more sharing."