Recently the economist David M. Levy called my attention to Stephen Heathorn's very interesting (2005) "Explaining Russell's Eugenic Discourse in the 1920s," Russell: the Journal of Bertrand Russell Studies: Vol. 25: Iss. 2, Article 4. (It criticizes Ray Monk's biography of Russell for claiming that Russell's interest in eugenics can be best explained by Russell's biography rather than, say, the intellectual currents of the time.) The piece is available at: http://digitalcommons.mcmaster.ca/russelljournal/vol25/iss2/4
Given my long-standing interest in the shared history of economics and philosophy, I should not have been surprised by Russell's flirt with eugenics in *Marriage and Morals* (1929). (Just the other day I was reading Berkeley's *The Querist*, and was amazed and saddened to find him advocate breeding in the context of many other social and progressive reforms of the Irish economy.) After all, many of the leading scientific lights of many political stripes (progressive reformers and social conservatives alike) endorsed eugenics before World War II. (The dissenting voices should not be overlooked, of course!) But this made me wonder how many of the other founders of "scientific philosophy," especially in the Vienna Circle, endorsed or opposed eugenics. Any leads most welcome!