Described by the philosopher A.J. Ayer as a work of 'great originality and power', this book revolutionized contemporary thinking on science and knowledge. Ideas such as the now legendary doctrine of 'falsificationism' electrified the scientific community, influencing even working scientists, as well as post-war philosophy.

This astonishing work ranks alongside The Open Society and Its Enemies as one of Popper's most enduring books and contains insights and arguments that demand to be read to...

With a new foreword by Scott Austin

'I hope that these essays may illustrate the thesis that all history is or should be the history of problem situations, and that in following this principle we may further our understanding of the Presocratics and other thinkers of the past. The essays also try to show the greatness of the early Greek philosophers, who gave Europe its philosophy, its science, and its humanism.' - Karl Popper, from the preface

The World of Parmenides is a brilliant explora...

If in this book harsh words are spoken about some of the greatest among the intellectual leaders of mankind, my motive is not, I hope, to belittle them. It springs rather from my conviction that, if our civilization is to survive, we must break with the habit of deference to great men. Karl Popper, from the PrefaceWritten in political exile during the Second World War and first published in two volumes in 1945, Karl Popper The Open Society and Its Enemies is one of the most influential books ...

First published in 1945 and never out of print, this is the second volume of one of the most famous and influential works of the twentieth century.

In this long-awaited volume, Jeremy Shearmur collects the most important writings Popper made in the years after The Open Society was first published. Many are published here for the first time.

Hailed on publication in 1957 as 'probably the only book published this year that will outlive the century', this is a devastating criticism of the idea that there are fixed laws in history and that human beings are able to predict them.

First published in 1945 and never out of print, this is the first volume of one of the most famous and influential works of the twentieth century.

One of Karl Popper's most wide-ranging and popular works, it provides the clearest statement of the fundamental idea that guided his work: that our knowledge grows by an unending process of trial and error.

Karl Popper described Die Beiden Grundrpobleme der Erkenntnistheorie.