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Every manufacturer rejected my design because vacuum bags were a 500 million dollar industry. Nobody wanted to kill it.

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I did not go to business school. I went to art school. That is why my vacuums look different from everyone else's.

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I made 5127 prototypes before I got the vacuum right. Each failure taught me something the previous one did not.

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Engineering is the most creative profession in the world. Artists make things that look good. Engineers make things that work.

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We spent 3.5 billion on an electric car and then killed it. The car worked beautifully. The economics did not.

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If everyone says your idea is crazy that is not a bad sign. It means nobody has done it yet.