Some critics have impugned his legal knowledge, but probably without justice.
In his closing years he had some controversy with John Locke, whom he considered to have impugned the doctrine of the Trinity.
Osiander, maintaining the infusion of Christ's righteousness into the believer, impugned the Lutheran doctrine of imputation; Chemnitz defended it with striking ability.
He subsequently defended a woman of Arretium, whose freedom was impugned on the ground that Sulla had confiscated the territory of that town.
Sir James Rose-Innes, a lawyer whose intellectual gifts and patriotism have never been impugned, was not a " party man," and this made him, on more than one occasion, a somewhat difficult political ally.