Described by the philosopher A.J. Ayer as a work 'of great originality and power' Popper's The Logic of Scientific Discovery revolutionized contemporary thinking on science and knowledge. Ideas such as his now legendary doctrine of 'falsificationism' electrified the scientific community, influencing even working scientists. The book also had a profound effect on post war philosophy. First published in English in 1959, this astonishing work ranks alongside The Open Society and Its Enemies as one of Popper's most enduring and famous books and contains insights and arguments that demand to be read to this day.