Clothes protect our vulnerable skin and they keep us warm or cool. They help us show that we are young or old, rich or poor, at work or play, and whether we may be good to know. But though they are basic, much as food and shelter are - and also may be beautiful - they have long had a bad press in serious, moral and philosophical writing. The main reason for this is that they are external to us, a cover we may hide behind, and one on which some people...