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.

In the digital age of "overnight" success stories such as Facebook, the hard slog is easily overlooked.

We need to encourage investors to invest in high-technology startups.

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

I was frustrated as a child when I had to use a vacuum. It had a screaming noise and the smell of stale dog and a lack of performance.

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

The computer dictates how you do something, whereas with a pencil you're totally free.