Quotable maths: Bourbaki Sep 13, 2012 Structures are the weapons of the mathematician - Bourbaki A selection of other posts Feb 26, 2014 Wrong, But Useful: Episode 12 Mar 15, 2013 Silly Questions Amnesty Jul 12, 2012 Quotable maths: Lehrer Mar 19, 2012 Secrets of the Mathematical Ninja: squares near 50. subscribe via RSS