The British government is seeking to develop a way to accurately measure the happiness of the population. In France such a gauge already exists, but is happiness really the proper goal of life? The French philosopher Pascal Bruckner tells Laurie Taylor that happiness has become a burdensome duty, and that the wave of enthusiasm for pursuing the nebulous quality has the opposite effect of actually promoting unhappiness amongst those who seek it. Much better, says he, to accept that happiness as an unbidden and fragile gift, arrives only by grace and luck.