[809c]
You know from our discourse1 what are the military exercises they ought to learn and to practice, but the matters that have not as yet, my friend, been fully declared to you by the lawgiver are these—first, literature, next, lyre-playing; also arithmetic, of which I said that there ought to be as much as everyone needs to learn for purposes of war, house-management and civic administration; together with what it is useful for these same purposes to learn about the courses of the heavenly bodies—stars and sun and moon—in so far as every State
1 Cp. Plat. Laws 796a.
Plato. Plato in Twelve Volumes, Vols. 10 & 11 translated by R.G. Bury. Cambridge, MA, Harvard University Press; London, William Heinemann Ltd. 1967 & 1968.
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