Books on theoretical physics?

Question

What are a couple good books on theoretical physics that are written for the general reader?

[string theory, quantum mechanics, particle physics, etc.]

Nothing too complicated. I find the subjects fascinating, but I have yet to take even an official physics class. I understand some general things about physics, but nothing too deep

Answer 1

Einstein's Universe by Nigel Calder

QED by Richard Feynman

Answer 2

Try any book by Brian Greene:

The Elegant Universe

The Fabric of the Cosmos

You can also check out books by Richard Feynmann:

Six Easy Pieces

Six Not So Easy Pieces