1912. Based on the 1902 translation of Prolegomena by Carus. With an essay on Kant's philosophy, and other supplementary material for the study of Kant. Kant's Prolegomena, although a small book, is indubitably the most important of his writings. It furnishes us with a key to his main work, The Critique of Pure Reason; in fact, it is an extract containing all the salient ideas of Kant's system. It approaches the subject in the simplest and most direct way, and is therefore best adapted as an introduction into his philosophy.