Book excerpt: Intolerance and bigotry lie at the heart of all human suffering. So claims Bertrand Russell at the outset of "In Praise of Idleness," a collection of essays in which he espouses the virtues of cool reflection and free enquiry; a voice of calm in a world of maddening unreason. With characteristic clarity and humour, Russell surveys the social and political consequences of his beliefs. From a devastating critique of the ancestry of fascism to a vehement defense of 'useless' knowledge, with consideration given to everything from insect pests to the human soul, " In Praise of Idleness " is a tour de force that only Bertrand Russell could perform.