 Although it has few adherents today, logical atomism was once a leading movement of early twentieth-century analytic philosophy. Different, though related, versions of the view were developed by Bertrand Russell and Ludwig Wittgenstein. Russell’s logical atomism is set forth chiefly in his 1918 work “The Philosophy of Logical Atomism” (Russell 1956), Wittgenstein’s in his Tractatus Logico-Philosophicus of 1921 (Wittgenstein 1981). The core tenets of Wittgenstein’s logical atomism may be stated as follows: (i) Every proposition has a unique final analysis which reveals it to be a truth-function of elementary propositions (Tractatus 3.25, 4.221, 4.51, 5); (ii) These elementary propositions assert the existence of atomic states of affairs (3.25, 4.21); (iii) Elementary propositions are mutually independent — each one can be true or false independently of the truth or falsity of the others (4.211, 5.134); (iv) Elementary propositions are immediate combinations of semantically simple symbols or “names” (4.221); (v) Names refer to items wholly devoid of complexity, so-called “objects” (2.02 &amp; 3.22); (vi) Atomic states of affairs are combinations of these objects (2.01).