I'm pretty tenacious when it comes to problems.

But I think it is a serious issue to wonder about the other platonic absolutes of say beauty and morality.

Do not be afraid to skip equations (I do this frequently myself).

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

It is hard to see how one could begin to develop a quantum-theoretical description of brain action when one might well have to regard the brain as "observing itself" all the time!

The basic theory in twistor theory is not to add extra dimensions.

Quantum mechanics makes absolutely no sense.