So a reader recently inquired, having heard that my friend and colleague, Judge Richard Posner of the U.S. Court of Appeals of the 7th Circuit, had once posted here on philosophical topics.  All posts by guest bloggers have separate categories, which you can find by scrolling down the lefthand sidebar; the posts by Judge Posner are here.   Other posters have included Jason Stanley (Rutgers), Benjman Hellie (Toronto), Jessica Wilson (Toronto), Bill Edmundson (Georgia State), and Jonathan Wolff (UCL).  I hope to have some more guest bloggers this summer.