Our Knowledge of the External World

Bertrand Russell (1872–1970) was one of the most formidable thinkers of the modern era. A philosopher, mathematician, educational innovator, champion of intellectual, social and sexual freedom, and a campaigner for peace and human rights, he was also a prolific writer of popular and influential books, essays and lectures on an extensive range of subjects. Considered to be one of the most controversial figures of the twentieth century, Bertrand Russell is widely renowned for his provocative writings. These definitive works offer profound insights and forward-thinking perspectives on a changing western society progressively shaped, most significantly, by two world wars, the decline of British imperialism and an evolving moral landscape.

• Introduction Preface 1. Current Tendencies 2. Logic as the Essence of Philosophy 3. On Our Knowledge of the External World 3. The World of Physics and the World of Sense 4. The Theory of Continuity 5. The Problem of Infinity Considered Historically 6. The Positive Theory of Infinity 7. On the Notion of Cause, with Applications to the Free-Will Problem Index

‘It is in every sense an epoch-making book: one that has been needed and expected for years.’ - Cambridge Magazine‘The author maintains a fresh and brilliant yet easy style which always makes his writings a pleasure to read.’ - Nature