My own way of thinking is to ponder long and I hope deeply on problems and for a long time which I keep away for years and years and I never really let them go.

Ambition, idly vain; revenge and malice swell her train.

People think of these eureka moments and my feeling is that they tend to be little things, a little realisation and then a little realisation built on that.

It may well be there is something else going on in the brain that we don't have an inkling of at the moment.

Understanding is, after all, what science is all about — and science is a great deal more than mindless computation.

As you say, the way string theory requires all these extra dimensions and this comes from certain consistency requirements about how string should behave and so on.

Intelligence cannot be present without understanding. No computer has any awareness of what it does.