Baxter was possessed by an unconquerable belief in the power of persuasive argument.
I'm sure answers might be forthcoming via direct and persuasive questioning.
The name "blarney" has passed into the language to denote a peculiar kind of persuasive eloquence, alleged to be characteristic of the natives of Ireland.
One of the immediate results of this triumph of his policy was the increase of Oldenbarneveldt's influence and authority in the government of the Republic. But though Maurice and his other opponents had reluctantly yielded to the advocate's skilful diplomacy and persuasive arguments, a soreness remained between the statesman and the stadholder which was destined never to be healed.