We don't actually plan to launch new businesses over the next few years, but we are planning to take the ones we have into new territories.

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.

I have always lived my life by making lists: lists of people to call, lists of ideas, lists of companies to set up, lists of people who can make things happen. Each day I work through these lists, and that sequence of calls propels me forward.

The funny thing is people won't let me pay for things. I'll be in a restaurant and the manager will say, 'Oh no, it's on the house.'

Our generation has inherited an incredibly beautiful world from our parents and they from their parents. It is in our hands whether our children and their children inherit the same world. We must not be the generation responsible for irreversibly damaging the environment.

Travel the world and meet people. I've been fortunate enough to see so much of the world, and being able to do so has brought me so many wonderful friends and experiences. There is no better way to learn than exploring new places.

Learn to look after your staff first and the rest will follow