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.

Exactly 5,126 attempts to make the first bagless vacuum cleaner were failures-some catastrophic disappointments, some minor defects. It took 15 years. Prototype 5,127 was the success ... Failure is painful, but it spurs on improvement like nothing else.

I imported the first Mac into England in 1984; you know, the beige box. I imported what I think were the first four that came into England. I never opened the instruction manual. That was the best thing about it.

If you didn't have patents, no one would bother to spend money on research and development. But with patents, if someone has a good idea and a competitor can't copy it, then that competitor will have to think of their own way of doing it. So then, instead of just one innovator, you have two or three people trying to do something in a new way.

Failure is an enigma. You worry about it, and it teaches you something.

As an engineer I'm constantly spotting problems and plotting how to solve them.

The media thinks that you have to make science sexy and concentrate on themes such as rivalry and the human issues.