In The Art of Travel, Alain de Botton asks why, when we spend so much of our money and energies on travel, the experience itself often turns out to be unsatisfactory. Why an array of souvenir shops, a burst of inclement weather and those small, needling rows with your companion seem so often to conspire to burst the bubble of your travel fantasies. Why crisp, white beaches, slick city cafés or fine, blue skies somehow rarely hit the spot. And how the whole business can leave you etched with an anxious desire to get out there and travel some more in the hope that this time, just once, the reality might live up to the glossy brochures lined up along the shelves of your imagination.