We must rapidly wean ourselves off our dependence on coal and fossil fuels.

When people warn me against doing something once my mind is made up, I grow increasingly determined to try it.

A business has to be involving, it has to be fun, and it has to exercise your creative instincts.

I never get the accountants in before I start up a business. It's done on gut feeling, especially if I can see that they are taking the mickey out of the consumer.

Of course, a lot of businesses want to reach students, so I funded the magazine by selling advertising. I sold something like $8,000 worth of advertising for the first edition, and that was in 1966. I printed up 50,000 copies, and I didn't even have to charge for them on the newsstand because my costs were already covered.

Breaking the rules and challenging convention is in the DNA of every successful entrepreneur. Doing things differently and solving problems with new, innovative and fresh approaches are the very reason many start-ups are able to compete and sometimes outpace the established market leaders.

I never set out to be a businessman