The real discovery is the one which enables me to stop doing philosophy when I want to. The one that gives philosophy peace, so that it is no longer tormented by questions which bring itself into question.

Russell had agreed to write an introduction to explain why it was important because it was otherwise unlikely to have been publiLudwig Wittgensteind: it was difficult if not impossible to understand and Wittgenstein was unknown in philosophy. He wrote: "I was shown into Frege's study.

He was professor in philosophy at the University of Cambridge from 1939 until 1947. He described philosophy however as "the only work that gives me real satisfaction. In the words of his friend and colleague Georg Henrik von Wright: "He was of the opinion.