τί ἥδιστον, τὸ ἐπιτυγχάνειν → what's pleasant, to get the goal
Melpŏmĕnē: ēs, f., Μελπομένη (the songstress),I the muse of tragic and lyric poetry: Melpomene, cui liquidam pater Vocem cum citharā dedit, Hor. C. 1, 24, 3; Mart. 4, 37, 1; Aus. Idyll. 20, 2.
