The key is to just get on the bike, and the key to getting on the bike… is to stop thinking about ‘there are a bunch of reasons I might fall off’ and just hop on and peddle the damned thing. You can pick up a map, a tire pump, and better footwear along the way.

Not only can you not plan the impact you're going to have, you often won't recognize it when you're having it.

If there's ever an example of the importance of making bold bets and focusing on what you love, it's Twitter.

The beauty of Twitter is that more and more people are flocking to it because it's shrinking their world.

Authenticity is absolutely the key to a great tweet.

That’s just silly. Closing a global business in reaction to single-issue national politics is foolish.

People have Plato's form in their mind of what a leader is, or what a C.E.O. is, and it is a bunch of elements that I really don't conform to at all. I've given this a lot of thought, and I came to the conclusion that I don't care.