There is widespread agreement that art is 'very important' - but it can be remarkably hard to say quite why. Yet if art is to enjoy its privileges, it has to be able to demonstrate its relevance in understandable ways to the widest possible audience. Alain de Botton and John Armstrong have a firm belief that art can help us with our most intimate and ordinary dilemmas, asking: What can I do about the difficulties in my relationships? Why is my work...