Principle and Practice

Michael Barr wrote: Let me begin my answer with an aphorism. I don't know who said it first, but I heard it from Charles Wells. In principle, there is no difference between principle and practice, but in practice... It was Jan van de Snepscheut. --Charles -- professional website: http://www.cwru.edu/artsci/math/wells/home.html blog: http://sixwingedseraph.wordpress.com/ abstract math website: http://www.abstractmath.org/MM//MMIntro.htm astounding math stories: http://www.abstractmath.org/MM//MMAstoundingMath.htm personal website: http://www.abstractmath.org/Personal/index.html sixwingedseraph.facebook.com [For admin and other information see: http://www.mta.ca/~cat-dist/ ]