Success is made of 99% failure.

Far too few designers put any thought into usability, ending up with a great product that's completely inaccessible.

Having a good idea is one thing, but persuading other people to buy it is quite another. Good inventors are polymaths: they think with their hands and their brains. They're experts in design, engineering and business.

[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.

I've fought court battles over my inventions before.

The Web is fascinating and transformative, but it's an easy, flashy, get-rich-quick option to the hard graft of proper industry.

Enjoy failure and learn from it. You never learn from success.