In this powerful biography, Ray Monk provides a unique overview of the life and works of one of the most talented people of our time. Based, among other things, on previously unpublished works and letters of Wittgenstein, this fact-rich book reveals the connection between the personality of Wittgenstein and his genius, who, with his works “Logical-Philosophical Treatise” and “Philosophical Investigations”, opened a new era of philosophical thought and gave its development a new direction .