ἀεὶ δ' ἀρέσκειν τοῖς κρατοῦσιν → always try to please your masters, always be obsequious to the masters
ἐθελημός, -όν (Α)εκούσιος.[ΕΤΥΜΟΛ. < θ. (ε)θελη- (εθελήσω, ηθέλησα)].