TEIN (1889-1951) was hugely influential on 20th-century philosophy, and here, he constructs a series of carefully and precisely numbered propositions on the relationship between language, logic, and reality, using a numbering system to show nested relationships between the propositions. Considered one of the major recent works of philosophy-a reputation enhanced, undoubtedly, by Bertrand Russell's glowing introduction-this edition is a reproduction of the translation by C.K. Ogden, first published in 1922, for which Wittgenstein himself assisted in the preparation of the English-language manuscript. Students of philosophy and those fascinated by the history of ideas will want a copy of this essential volume.