The articles on life and work of Immanuel Kant are expressions of acontemporary,critical understanding of Kant. They give the reader courage to enter into a fruitful debate with the “old man from Koenigsberg,” from which one cannot return without philosophical profit. Important aspects of Kant’s complete work are discussed in order to illustrate the contemporary relevance of the three famous Kantian questions (What can I know? What should I do? What can I hope for?). The essays are weighted towards the practical philosophy, which Kant himself described as the keystone of his complete philosophical system.