i. Primary Philosophy, Theology, also called Wisdom, about things as things.
ii. Mathematical Philosophy, about quantitative things in the abstract.
iii. Physical Philosophy, about things as changing, and therefore about natural substances or bodies, composed of matter and essence.
II. Practical or Political Philosophy, or philosophy of things human (cf. E.N. x. 9-fin.): about human good; subdivided (E.N. vi. 8, cf. E.E. Α 8, 1218 b 13) into:—
i. Ethics, about the good of the individual.
ii. Economics, about the good of the family.
iii. Politics, about the general good of the state.
III. Productive, or Art (τέχνη): about works produced; subdivided (Met. Α. 1, 981 b 17-20) into:—
i. Necessary (πρὸς τάναγκαῖα), e.g. medicine.
ii. Fine (πρὸβ διαγωγήν), e.g. poetry.