Aha I was given a copy of the variations of A Brief History and a couple of Sagan's books. I managed to keep my head through most of A Brief History of The Universe (I think it is), but stopped reading because life was calling my name at the time. Lately, I've looking into the Sagan books I have (Pale Blue Dot, Contact, Demon Haunted World and I think one other one... I don't remember what it is though.)
EDIT: not a physicist myself, just somebody with some time to invest.