He proceeded, therefore, with the more courage to dart his spiritual thunders.

He issued the sentence of excommunication against Robert de Broc and Nigel de Sackville, with many others, who either had assisted at the coronation of the prince, or been active in the late persecution of the exiled clergy.

This violent measure, by which he, in effect, denounced war against the king himself, is commonly ascribed to the vindictive disposition and imperious character of Becket; but as this prelate was also a man of acknowledged abilities, we are not in his passions alone to look for the cause of his conduct, when he proceeded to these extremities against his enemies.

His sagacity had led him to discover all Henry's intentions; and he proposed, by this bold and unexpected assault, to prevent the execution of them.
The king, from his experience of the dispositions of his people, was become sensible that his enterprise had been too bold, in establishing the constitutions of Clarendon, in defining all the branches of royal power, and in endeavoring to extort from the church of England, as well as from the pope, an express avowal of these disputed prerogatives.
Conscious also of his own violence in attempting to break or subdue the inflexible primate, he was not displeased to undo that measure which had given his enemies such advantage against him, and he was contented that the controversy should terminate in that ambiguous manner, which was the utmost that princes, in those ages, could hope to attain in their disputes with the see of Rome.

Though he dropped for the present the prosecution of Becket, he still reserved to himself the right of maintaining, that the constitutions of Clarendon, the original ground of the quarrel, were both the ancient customs and the present law of the realm; and though he knew that the papal clergy asserted them to be impious in themselves, as well as abrogated by the sentence of the sovereign pontiff, he intended, in spite of their clamors, steadily to put those laws in execution, and to trust to his own abilities, and to the course of events, for success in that perilous enterprise.