Anyone who makes an effort at whatever they hope to accomplish can, and will, seriously improve their chances of succeeding.

If young people do see me as an example (I'm very flattered if they do!) I hope it is as someone who will go out there and live life to the full.

If people are crazy enough to dare, impossible things happen.

I was trouble - and always in trouble. Aged eight I still couldn't read. In fact, I was dyslexic and short-sighted. Despite sitting at the front of the class, I couldn't read the blackboard. Only after a couple of terms did anyone think to have my eyes tested. Even when I could see, the letters and numbers made no sense at all.

If people aren't calling you crazy, you aren't thinking big enough.

The truth is this: the Earth cannot provide enough food and fresh water for 10 billion people, never mind homes, never mind roads, hospitals and schools.

If you spot an opportunity and are really excited by it, throw yourself into it with everything you've got.