As relevant today as it was on first publication, the ABC of Relativity is a masterwork of scientific popularisation and an accessible introduction to Einstein’s theory of relativity.

Controversial and remarkably forward thinking, this book explores the changing role of marriage and codes of sexual ethics, and daringly sets out a new morality shaped by the dramatic societal changes which took place in the early parts of twentieth century.

Mysticism and Logic is one of Russell's most celebrated collection of essays. It sets the tone for analytical philosophy in the English-speaking world and is Russell's first foray into the role of public philosopher. This Routledge Classics edition includes a new Foreword by Bernard Linsky.

Logic and Knowledge presents Russell's most important work on these topics in a single volume, which by placing philosophical logic at its core was of monumental importance in shaping the path of analytical philosophy. This Routledge Classics edition includes a new Foreword by Graham Stevens.

Why I am not a Christian is considered one of the most blasphemous philosophical documents ever written, and at a time when we have faith schools and wars over religious beliefs, its message today couldn't be more relevant.

The first of his famous BBC Reith lectures in which Russell examines Ancient Greek philosophy, the French Revolution and the modern welfare state with characteristic clarity and deep understanding. This is Russell at his intellectual best.

Featuring seminal work in the philosophies of mathematics and language, this comprehensive and assiduously edited collection also makes available his provocative and controversial views on religion and international relations.

Insightful and highly accessible, this selection of seven essays displays Russell's signature brilliance of exposition in the examination of ethical subjects and the nature of truth, and marks an important period in the evolution of thought of one of the world’s most influential thinkers.

Written at the height of the Cold War, Russell argues that the only way to end the threat of nuclear war is to end war itself, making this highly controversial text as relevant today as it was on first publication.

Written in the approachable style that has made Russell’s works so revered, this is a major work of political history in which significant economic and political forces and events that shaped the nineteenth century are examined.