 Bertrand Russell (1872–1970) introduced the phrase “logical atomism” to describe his philosophy in 1911 (RA, 94), and used the phrase consistently throughout the 1910s and 1920s (OKEW, 12; SMP, 84; PLA, 178; LA, 323; OOP, 259).  Russell’s logical atomism is perhaps best described as partly a methodological viewpoint, and partly a metaphysical theory. 