τὸ μάθημα . . . λαβόντα: corresponds to δέξασθαι εἰς τὸ σῶμα above, and καὶ μαθόντα to πιόντα ἢ φαγόντα, hence, on learning and so receiving into the soul.
νέοι ὥστε κτἑ.: too young to determine. Yet not the degree of the quality but the quality itself is declared to be unsuited to the end, which is put in the inf., or inf. with ὥστε. Cf. Menex. 239 b ὁ χρόνος βραχὺς διηγήσασθαι, Eur. Andr. 80 γέρων ἐκεῖνος ὥστε σ᾽ ὠφελεῖν παρών. See G. 261, 1; H 642. —Contrast the less modest expression of Protagoras 317 c.
ἀνακοινωσώμεθα: cf. 317 d.
