I. Soul and Mathematicals -- II. Posidonius and Neoplatonism -- III. The Subdivisions of Theoretical Philosophy -- IV. The Origin of the Quadrivium -- V. Speusippus in Iamblichus -- VI. A New Fragment of Aristotle -- VII. Metaphysica generalis in Aristotle ? -- Conclusion -- Index of Names -- Index of Passages in Greek and Latin Authors