Not quantum physics, but if you want to read a real classic, there's also Weyl's Space-Time-Matter, which is mind-blowing in its lucidity and ambition (unifying

Not quantum physics, but if you want to read a real classic, there's also Weyl's Space-Time-Matter, which is mind-blowing in its lucidity and ambition (unifying GR and electromagnetism): http://archive.org/details/spacetimematter00weyluoft http://archive.org/details/spacetimematter00weyluoft. Well, while I started, why not add a list of freely available physics books online from PSE: http://physics.stackexchange.com/questions/6157/list-of-freely-available-physics-books/7382#7382 http://physics.stackexchange.com/questions/6157/list-of-free.... It's amazing that you can pretty much get up to PhD level education using these books (you should buy Landau's books, though, unfortunately those are not free).