Alain Badiou is perhaps the world's most significant living philosopher. In his annual seminars on major topics and pivotal figures, Badiou developed vital aspects of his thinking on a range of subjects that he would go on to explore in his influential works. In this seminar, Badiou offers a tour de force encounter with a lesser-known seventeenth-century philosopher and theologian, Nicolas Malebranche, a contemporary and peer of Spinoza and Leibniz.