 In the passage of Metaphysics VII 2 quoted above, after we get the identification of formal and mathematical numbers, with the formal numbers actually carrying the weight, there is a brief description of the rest of the universe: “while the others, lines and planes, come next, {and so on} down to the substance of the heavens and to the perceptibles.” It appears that Xenocrates pictured the universe as unfolding in the sequence: (1) forms = numbers; (2) lines; (3) planes; (4) solids; (5) solids in motion, i.e. astronomical bodies; …; (n) ordinary perceptible things. Solid shapes aren’t mentioned in this sentence, but they were earlier, in 1028b17–18, and they are a standard stage in this sequence.