Originally published in 1915, this book presents the content of four lectures delivered by the author at the University of Cambridge from 1914 to 1915, as part of the Hulsean Lectures series. The text discusses the abiding value of Pascal and deals with misconceptions regarding the nature of his work and character. Detailed notes and an authorial preface are also provided. This book will be of value to anyone with an interest in Pascal and his influence on early twentieth-century thought.