Ludwig Wittgenstein was an extraordinary original philosopher whose influence on 20th century thought goes far beyond the boundaries of philosophy. In this book, which aims to make Wittgenstein’s thought as accessible and comprehensive as possible for the general reader, A. C. sheds light on the nature and impact of Wittgenstein’s ideas. In this book, the author tries to describe either the thought and ideas that Wittgenstein developed in his early period, or the thought and ideas that Wittgenstein developed in his late period, trying to tighten the differences and connections between them to give us the insights that that the continuing influence Wittgenstein created on the fringes of contemporary thought.