Bill Gates

Governments will always play a huge part in solving big problems. They set public policy and are uniquely able to provide the resources to make sure solutions reach everyone who needs them. They also fund basic research, which is a crucial component of the innovation that improves life for everyone.

After decades spent in rewrite rooms surrounded by other shouting writers, I discovered that I work best alone. I like being in charge of my time, working out the problems according to my own rhythms and being able to nap. That's a big one, the napping on demand!

For a boy of ten, used to the coal bings and rust-coloured burns of Cowdenbeath, the fields and woodland of Kingswood, with its overgrown but stately avenue of copper-barked sequoias, felt like a local version of paradise.