It's perfectly healthy-encouraged, even- to have an idea tomorrow that contradicted your idea today

If we think long term, we can accomplish things that we couldn't otherwise accomplish.

If you make customers unhappy in the physical world, they might each tell 6 friends. If you make customers unhappy on the Internet, they can each tell 6,000 friends.

If your customer base is aging with you, then eventually you are going to become obsolete or irrelevant. You need to be constantly figuring out who are your new customers and what are you doing to stay forever young.

For many people, extended reading sessions on an LCD display cause eyestrain.

Am I going to regret leaving Wall Street? No. Will I regret missing the beginning of the Internet? Yes.

You want to look at what other companies are doing. It's very important not to be hermetically sealed. But you don't want to look at it as if, 'OK, we're going to copy that.' You want to look at it and say, 'That's very interesting. What can we be inspired to do as a result of that?' And then put your own unique twist on it.