R. G. Bury, The Symposium of Plato

ὁ ἔρως ἐστὶν ἀεί. Most edd. follow Bekker in ejecting ἀεί: Rettig, however, rightly keeps it with the note “ἀεί=die gegebene Definition gilt überall und für alle Fälle”; cp. 205 A, B.

αὐτὸ. Sc. τὸ τἀγαθὸν αὑτοῖς εἶναι ἀεί.

ἡ σύντασις. Cp. 203 D (Ἔρως ἐστι) σύντονος: Phileb. 46 D σύντασιν ἀγρίαν ποιεῖ (with my note): Euthyd. 288 D. For the limitation of the notion of Eros here (ἂν καλοῖτο), cp. that in 205 A ff. (καλοῦνται, C, D).

τυγχάνει ὂν. Not “what does it happen to be,” but “what in reality is it”: see Verrall on Eur. Med. 608: cp. Phaedo 65 D—E.

Οὐ μεντἂν κτλ. For the suppressed protasis (sc. εἰ τοῦτο εἶχον εἰπεῖν), cp. 175 D.

ἐφοίτων παρὰ σὲ . φοιτᾶν is the regular word for “attending” lectures or a school, see Prot. 326 C εἰς διδασκάλων...φοιτᾶν: Rep. 328 D δεῦρο παρ᾽ ἡμᾶς φοίτα: Phaedo 59 B.

τόκος ἐν καλῷ. The act of procreation appears to be called almost indifferently (1) τόκος, as here, (2) γέννησις (206 C, E, 209 D), (3) γέννησις καὶ τόκος (206 E), (4) in passive aspect γένεσις (206 D, 207 D). Similarly with the verbs: we find τίκτειν (206 C, 210 C, etc.), γεννᾶν (206 D, 207 A, etc.), τίκτειν καὶ γεννᾶν (206 D, 209 B, C).

Μαντείας...μανθάνω. Notice the play on the stem-sound. Rettig, citing Eur. Hippol. 237 (τάδε μαντείας ἄξια πολλῆς), writes “Witzspiel mit Anklang an Eur. und Anspielung auf Diotima's Heimath und Beruf”: the latter allusion is likely enough, but the “Anklang an Eur.” is very problematical; had it been specially intended we should have had ἄξια or πολλῆς echoed as well.