I made 5,127 prototypes of my vaccum before I got it right. There were 5,126 failures. But I learned from each one. That’s how I came up with a solution. So I don’t mind failure.

I've obviously used fans - I wouldn't say all my life, because we couldn't afford them when I was young, but from my 20s and onwards we've had to use fans. And I've always loathed them. Everything about them. The way you adjust them, getting them at the angle you want. Carrying them. Cleaning them. The danger of putting your finger in them.

The key to success is failure… Success is made of 99 percent failure.

Successes teach you nothing. Failures teach you everything. Making mistakes is the most important thing you can do.

Anger is a good motivator.

Don't listen to experts.

[M]anufacturing, science and engineering are ... incredibly creative. I'd venture to say more so than creative advertising agencies and things that are known as the creative industries.