The demand for a complete table of the categories--This demand extraneous to Logic--Logical categories and real categories--Uniqueness of the logical category: the concept. The other categories, no longer logical, but real. Systems of categories--The Hegelian system of the categories, and other posterior systems--The logical order of the predicates or categories--Illusion as to the logical reality of this order--The necessity of an order of the predicates not founded upon Logic in particular, but upon the whole of Philosophy--False distinction of Philosophy into two spheres--Metaphysic and Philosophy, rational Philosophy and real Philosophy, etc., derived from the confusion between Logic and Doctrine of the categories--Philosophy and pure Logic, etc.; overcoming of the dualism. SECOND PART PHILOSOPHY, HISTORY AND THE NATURAL AND MATHEMATICAL SCIENCES I THE FORMS OF KNOWLEDGE AND THE DIVISIONS OF KNOWLEDGE Summary of the results relating to the forms of knowledge--Non-existence of technical forms, and of composed forms--Identity of forms of knowledge and of knowing. Objections to them--Empirical distinctions and their limits--Enumeration and determination of the forms of knowing reality, corresponding to the forms of knowledge--Critique of the idea of a special Logic as doctrine of the forms of knowing the external world and of a special Logic as doctrine of the methods--Nature of our treatment of the forms of knowledge. II PHILOSOPHY Philosophy as pure concept; and the various definitions of philosophy--Those which negate philosophy--Those which define it as science of supreme principle, of final causes, etc.; contemplation of death, etc.; as elaboration of the concepts, as criticism, as science of norms; as doctrine of the categories--Exclusion of material definitions from philosophy--Idealism of every philosophy--Systematic character of philosophy--Philosophic significance and literary significance of the system--Advantages and disadvantages of the literary form of the system--Genesis of the systematic prejudice, and rebellion against it--Sacred and philosophic numbers; meaning of their demand--Impossibility of dividing philosophy into general and particular--Disadvantages of the conception of a general philosophy, distinct from particular philosophies. III HISTORY