Advertising is the price you pay for unremakable thinking.

Entrepreneurs must be willing to be misunderstood for long periods of time.

Your brand is what people say about you when you're not in the room

If you decide that you're going to do only the things you know are going to work, you're going to leave a lot of opportunity on the table.

When you receive criticism from well-meaning people, it pays to ask, ‘Are they right?’ And if they are, you need to adapt what they’re doing. If they’re not right, if you really have conviction that they’re not right, you need to have that long-term willingness to be misunderstood. It’s a key part of invention.

I went to Princeton specifically to study physics.

Maintain a firm grasp of the obvious at all times.