Sets out to examine the nature of happiness. This book argues that happiness consists in 'activity of the soul in accordance with virtue', for example with moral virtues, such as courage, generosity and justice, and intellectual virtues, such as knowledge, wisdom and insight.

Set immediately prior to the trial and execution of Socrates in 399 BC, Theaetetus shows the great philosopher considering the nature of knowledge itself, in a debate with the geometrician Theodorus and his young follower Theaetetus. Their dialogue covers many questions, such as: is knowledge purely subjective, composed of the ever-changing flow of impressions we receive from the outside world? ..

New edition of the Meditations with introductions by John Cottingham and Bernard Williams.

An account of Greek tragedy, it demonstrates how the elements of plot, character and spectacle combine to produce 'pity and fear' - and why we derive pleasure from this painful process. It introduces the crucial concepts of mimesis ('imitation'), hamartia ('error') and katharsis, which have informed serious thinking about drama ever since.

Heidegger's Introduction to Metaphysics is one of the most important works written by this figure of 20th-century philosophy. The new translation aims to make this work more accessible including provision of conventional translations of Greek passages that Heidegger translated unconventionally.