This book presents a view of the concepts in the Kantian scheme of things. The author attempts to show that Kant has not established the necessity of thinking human freedom in the theoretical sphere as would seem to be demanded by the inner logic of the first Critique and by the concept of autonomy in the second Critique. The book begins with a brief description of the critical teaching and the consequent limitations on metaphysical knowledge, in order to offer a general estimate of the position of freedom in Kant's overall scheme. Contents: A General Outline of Kantian Metaphysics; The Various Concepts of Freedom; The Evidences for Transcendental Freedom; Practical Freedom and Autonomy; and The Possibility of Transcendental Freedom.