A few readers now have suggested I should note the passing of the great evolutionary geneticist Richard Lewontin, whose work was very influential in philosophy of biology and with whom many philosophers of science studied at one point or another. The NYT obituary is here, and there is a rich and very personal memorial by one of his best-known students, the biologist Jerry Coyne (Chicago). Comments are open for those who want to comment on the significance of Lewontin's work for philosophy.