Æsthetic activity and physical concepts--Expression in the æsthetic sense, and expression in the naturalistic sense--Representations and memory--The production of aids to memory--Physical beauty--Content and form: another meaning--Natural beauty and artificial beauty--Mixed beauty--Writings--Free and non-free beauty--Criticism of non-free beauty--Stimulants of production XIV ERRORS ARISING FROM THE CONFUSION BETWEEN PHYSICS AND ÆSTHETIC Criticism of æsthetic associationism--Criticism of æsthetic Physics--Criticism of the theory of the beauty of the human body--Criticism of the beauty of geometrical figures--Criticism of another aspect of the imitation of nature--Criticism of the theory of the elementary forms of the beautiful--Criticism of the search for the objective conditions of the beautiful--The astrology of Æsthetic XV THE ACTIVITY OF EXTERNALIZATION. TECHNIQUE AND THE THEORY OF THE ARTS The practical activity of externalization--The technique of externalization--Technical theories of the different arts--Criticism of æsthetic theories of particular arts--Criticism of the classification of the arts--Criticism of the theory of the union of the arts--Relation of the activity of externalization to utility and morality XVI TASTE AND THE REPRODUCTION OF ART Æsthetic judgement: its identity with æsthetic reproduction--Impossibility of divergences--Identity of taste and genius--Analogy with other activities--Criticism of æsthetic absolutism (intellectualism) and relativism--Criticism of relative relativism--Objection founded on the variation of the stimulus and of psychic disposition--Criticism of the distinction of signs into natural and conventional--The surmounting of variety--Restorations and historical interpretation XVII THE HISTORY OF LITERATURE AND OF ART Historical criticism in literature and art: its importance--Literary and artistic history: its distinction from historical criticism and from the æsthetic judgement--The method of artistic and literary history--Criticism of the problem of the origin of art--The criterion of progress and history--Non-existence of a single line of progress in artistic and literary history--Errors committed against this law-- Other meanings of the word "progress" in relation to Æsthetic XVIII CONCLUSION: IDENTITY OF LINGUISTIC AND ÆSTHETIC Summary of the study--Identity of Linguistic with Æsthetic--Æsthetic formulation of linguistic problems--Nature of language--Origin of language and its development--Relation between Grammar and Logic--Grammatical kinds or parts of speech--The individuality of speech and the classification of languages--Impossibility of a normative Grammar--Didactic organisms--Elementary linguistic facts, or roots--Æsthetic judgement and the model language--Conclusion II HISTORY OF ÆSTHETIC I ÆSTHETIC IDEAS IN GRÆCO-ROMAN ANTIQUITY