φρενομανής
From LSJ
τέχνη δὲ ἄνευ ἀλκῆς οὐδὲν ὠφελεῖ (Thucydides 2.87.4.6) → η τέχνη απαιτεί κουράγιο, skill without heart is useless
English (LSJ)
ές,
A distracted, maddened, A.Ag.1140 (lyr.), Aristodem.8.1 φρενο-μόρως, Adv., (μόρος) suffering from a calamity to the mind, νοσοῦντα φ. S. Aj.626 (lyr.; -βόρως Dindorf).