Starting with Socrates who, with his injunction to ‘know thyself’, provided a model of the philosophical life, and ending with Nietzsche, James Miller provides brief biographies of twelve philosophers. The selection includes both canonical figures such as Augustine, Descartes and Kant, and less obvious thinkers including Diogenes, Montaigne and Emerson, but every one of them has ‘struggled to live his life according to a deliberately chosen set of precepts and beliefs’. Previously in Postscript as The Philosophical Life.