πείθεται πᾶς ἥδιον ἢ βιάζεται (Dio Cassius, Historiae Romanae 8.36.3) → it's always more pleasant to be persuaded than to be forced
adverb from a compound of πολύς and τρόπος; in many ways, i.e. variously as to method or form: in divers manners.