John Locke (1632-1704) was a leading seventeenth-century philosopher and widely considered to be the first of the British Empiricists. One of the most influential Enlightenment thinkers, his major works and central ideas have had a significant impact on the development of key areas in political philosophy and epistemology. This comprehensive and accessible guide to Locke's life and work includes more than 90 specially commissioned entries, written by a team of leading experts, covering every aspect of Locke's thought. The Companion presents details of Locke's life, historical and philosophical context, a comprehensive overview of the all the key themes and topics apparent in his work, and a thorough account of his reception and enduring influence. This is an essential reference tool for anyone working in the fields of Locke Studies and Seventeenth-Century Philosophy