Work as hard and as much as you want to on the things you like to do the best.

Work hard to find something that fascinates you.

Physicists like to think that all you have to do is say, these are the conditions, now what happens next?

To guess what to keep and what to throw away takes considerable skill. Actually it is probably merely a matter of luck, but it looks as if it takes considerable skill.

There are theoretical physicists who imagine, deduce, and guess at new laws, but do not experiment; and then there are experimental physicists who experiment, imagine, deduce, and guess.

Physics is like sex: sure, it may give some practical results, but that's not why we do it.

The Quantum Universe has a quotation from me in every chapter - but it's a damn good book anyway.