Tractatus Logico-Philosophicus may be the most important book of philosophy written during the twentieth century. Wittgensteins writing style is clear, succinct, and accessible. Bertrand Russell claimed that I cannot see any point on which it is wrong. But to have constructed a theory of logic which is not at any point obviously wrong is to have achieved a work of extraordinary difficulty and importance. Required ready for anyone interested in philosophy. Wilder Publications is a green publisher. All of our books are printed to order. This reduces waste and helps us keep prices low while greatly reducing our impact on the environment.