2nd World Congress on the Square of Opposition. Corte, Corsica, June 17-20, 2010. An interdisciplinary gathering around the square. Among invited speakers: Alain Badiou, Pierre Cartier, Jaakko Hintikka, Saul Kripke, Stephen Read. Deadline for contributed talks: January 15th 2010 http://www.square-of-opposition.org