But in a charity shop also stumlbed across "In Search of Schrodingers Cat" by John Gribbon for 50p. Excellent!
I generally don't learn much from Gribbon, in that he just takes scientific theory and runs with it, normally in directions I've anticipated or dreamed of when I was studying physics myself (My bad physics teacher, "Vexen you haven't been reading books that aren't on the syllabus again, have you? Wasting your time...")
But it's a significant book, and Gribbon can probably explain things much better than I, so is a good Quote-Source book.