Nobody wants the expenditure of a lease on a factory which lasts 21 years. You can't plan 21 years ahead.

I think the search engines are the new equivalent of publishing: an enabler of information.

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

Emerging markets are hugely important.

If you invent something, you're doing a creative act. It's like writing a novel or composing music. You put your heart and soul into it, and money. It's years of your life, it's your house remortgaged, huge emotional investment and financial investment.

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.

What I've learned from running is that the time to push hard is when you're hurting like crazy and you want to give up. Success is often just around the corner.