The most rewarding thing for me has been this affirmation for me that people are basically good and smart, and if you give them a simple tool that allows them to exhibit that behavior, they'll prove it to you every single day.

I think of Twitter as a messaging system that you didn't know you needed until you had it. Think about when cell phones first started coming out. People said, "Why would I carry my phone around?" And now you'll drive back to your house thirty miles if you forget your cell phone.

I think Twitter has brought something totally new to the table.

I knew Mac pretty well. I'd used them when I was younger.

Positive culture comes from being mindful, and respecting your coworkers, and being empathetic.

You curate information that you want to receive. It's a lot different because I'm not asking you if it's okay, I'm just saying I'm following your updates. That's why I don't think of Twitter as a social network.

Have confidence in your ideas before they even exist.