I don't think I see the world in terms of stupid or clever, but in terms of being able to get irony. There's some awful statistic about only 20 per cent of Americans being able to understand irony.

In Kenya, I met wonderful girls; girls who wanted to help their communities. I was with them in their school, listening to their dreams. They still have hope. They want to be doctor and teachers and engineers.

Treat people as if they were what they ought to be and you help them to become what they are capable of being.

The grand aim of all science is to cover the greatest number of empirical facts by logical deduction from the smallest number of hypotheses or axioms.

At school I was lazy. But I started working when I was 15, washing dishes at a local truck stop restaurant. I was really, really bored with school, and I wanted to get a job as fast as I could. School was just so easy. There was just no challenge to it.