Note 30 — Chapter XXXVIII · TIMÆUS AND KRITIAS.
Reading edition
Plato, Timæus, p. 34 A. ἐπὶ δὲ τὴν περίοδον ταύτην, ἅτ’ οὐδὲν ποδῶν δέον, ἀσκελὲς καὶ ἄπουν αὐτὸ ἐγέννησεν.
Plato reckons six varieties of rectilinear motion, neither of which was assigned to the Kosmos — forward, backward, upward, downward, to the right, to the left.