A Companion to Wittgenstein's Tractatus (Cornell Classics in Philosophy) - Softcover

"Black's book is, in effect, two books in one, and each of them is very good. First, there is the useful Companion to the Tractatus: the store of information that anyone who picked up the Tractatus would want to have.....Second, there are the interpretive essays: always judicious, frequently illuminating. It is hard to see how [this book] could have been more complete."