"Entrepreneurs are all a little crazy. There is a fine line between an entrepreneur and a crazy person. Crazy people see and feel things that others don't. An entrepreneur's dream is often a kind of madness, and it is almost as isolating. What differentiates the entrepreneur from the crazy person is that the former gets other people to believe in his vision."

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My dad said, "As long as you're happy." I used to think it was kind of a very simple idea or philosophy because he wasn't religious. But you've got to try and be happy. And if you're not happy, you can't help anyone else. So obviously, some crazy people could go to places, but I just think you need to be content within yourself, so that's the thing.

— Eddie Izzard