'Can machines think?' 'What is the meaning of life?' 'Is death to be feared?' 'Why be good?' 'What am I?' and 'WHAT DO WE REALLY KNOW?' These are some of the most fundamental and frequently asked questions in philosophy. In What Do We Really Know? acclaimed author Simon Blackburn draws on his own distinguished work, as well as that of history's great thinkers, to provide a thought-provoking and accessible introduction to this eternally fascinating subject.