Enlightenment is man's emergence from his self-imposed immaturity. Nothing is required for this enlightenment except freedom; and the freedom in question is the least harmful of all, namely, the freedom to use with and publicly in all matters.
WorksCritique Of Pure Reason; Critique Of Practical Reason; Critique Of Judgment; Prolegomena To Any Future Metaphysics; Answering The Question: What Is Enlightenment?; The Metaphysics Of Morals; Religion Within The Bounds Of Bare Reason