Karl Popper has been hailed as the greatest philosopher of all time and as a thinker whose influence is ackowledged by a variety of scholars. This work demonstrates Popper's importance across the whole range of philosophy and provides an introduction to the main themes of philosophy itself.

Encompassing all his published work and an array of secondary literature about Foucault, this book appraises his philosophical background and his debts to previous thinkers such as Bachelard and Kuhn.