I. Of the different Species of Philosophy II. Of the Origin of Ideas III. Of the Association of Ideas IV. Sceptical Doubts concerning the Operations of the Understanding V. Sceptical Solution of these Doubts VI. Of Probability VII. Of the Idea of necessary Connexion VIII. Of Liberty and Necessity IX. Of the Reason of Animals X. Of Miracles XI. Of a particular Providence and of a future State XII. Of the academical or sceptical Philosophy