On Travel presents a pyrotechnic display of cracking one-liners, cynical wordplay and comic observation, mining three thousand years of global wit and wisdom: from Pliny to Spinoza and from Albert Einstein to Aunt Augusta. Beyond the mad diversity of opinions and ideas, there is a gradually emerging consensus: that other people are crucial to our understanding of ourselves and that there is more than one right way to be. It also offers occasional practical tips to make the most of your trip, ranging from advice on choosing your companions to the importance of tethering your camel. And it proves that travel - far from being an indulgent escape - is real preparation for the journey through life.