οὗτος … τίς (ὢν) … κρατεῖ; = τίς ἔστιν οὗτος ὃς κρατεῖ;
λόγῳ τε καὶ σθένει, word (counsel) and might (of deeds): Od. 16.242 (Odysseus) “χεῖράς τ᾽ αἰχμητὴν ἔμεναι καὶ ἐπίφρονα βουλήν”: Pind. Pyth. 5.111 (may Cyrene's king be blest) “ἐπ᾽ ἔργοισιν ἀμφί τε βουλαῖς”: Soph. O. T. 884 (of a τύραννος) “εἰ δέ τις ὑπέροπτα χερσὶν ἢ λόγῳ πορεύεται”. So Theseus is described by Thuc. 2.15 as “γενόμενος μετὰ τοῦ ξυνετοῦ καὶ δυνατός”.