ὁμοίως δὲ καὶ τῶν ἀνθρώπων κτλ.: the thought that the very worst of characters are developed from the most richly endowed natures is frequent in Plato. Cf. Rep. 491; Gorg. 526A.
ὧν ἂν ἐγχειρῶσι: equivalent to τούτων, ἃ ἂν ἐγχειρῶσιν ἐξεργάζεσθαι. For the gen., see on τῶν εἰς τὸν πόλεμον iii. 1. 6.
ἐργάζεσθαι: for the inf., see on ὧν οὐδὲν εἶναι i. 1. 8.