Tractatus Logico-Philosophicus (Edited By A.J. Ayer, with the Introduction by Bertrand Russell)
London; (1963): Routledge & Kegan Paul. Octavo. 2nd impression with a few corrections. 166 pages, index. Originally published in 1921 as Logisch-philosophische abhandlung and the only major work published in his lifetime is here printed with the German text on the left page and the English translation by D.F. Pears..... More