books.google.com - G. H. Hardy was one of this century's finest mathematical thinkers, renowned among his contemporaries as a 'real mathematician ... the purest of the pure'. He was also, as C. P. Snow recounts in his Foreword, 'unorthodox, eccentric, radical, ready to talk about anything'. This 'apology', written in 1940...http://books.google.com/books/about/A_Mathematician_s_Apology.html?id=beImvXUGD-MC&q=collaboration&utm_source=gb-gplus-shareA Mathematician's Apology