To protect political discussion from the danger to which it would be exposed by these wide principles, if they were severely and literally enforced, our ancestors trusted to various securities—some growing out of the law and constitution, and others arising from the character of those public officers whom the constitution had formed, and to whom its administration is committed. They trusted, in the first place, to the moderation of the legal officers of the crown, educated in the maxims and imbued with the spirit of a free government; controlled by the superintending power of Parliament, and peculiarly watched in all political prosecutions by the reasonable and wholesome jealousy of their fellow-subjects. And I am bound to admit that, since the glorious era of the Revolution [1688], making due allowance for the frailties, the faults, and the occasional vices of men, they have, upon the whole, not been disappointed. I know that in the hands of my learned friend that trust will never be abused. But, above all, they confided in the moderation and good sense of juries, popular in their origin, popular in their feelings, popular in their very prejudices, taken from the mass of the people, and immediately returning to that mass again. By these checks and temperaments they hoped that they should sufficiently repress malignant libels, without endangering that freedom of inquiry which is the first security of a free state. They knew that the offence of a political libel is of a very peculiar nature, and differing in the most important particulars from all other crimes. In all other cases, the most severe execution of law can only spread terror among the guilty; but in political libels it inspires even the innocent with fear. This striking peculiarity arises from the same circumstances which make it impossible to define the limits of libel and innocent discussion; which make it impossible for a man of the purest and most honorable mind to be always perfectly certain whether he be within the territory of fair argument and honest narrative, or whether he may not have unwittingly over stepped the faint and varying line which bounds them. But, gentlemen, I will go further. This is the only offence where severe and frequent punishments not only intimidate the innocent, but deter men from the most meritorious acts, and from rendering the most important services to their country. They indispose and disqualify men for the discharge of the most sacred duties which they owe to mankind. To inform the public on the conduct of those who administer public affairs requires courage and conscious security. It is always an invidious and obnoxious office; but it is often the most necessary of all public duties. If it is not done boldly, it can not be done effectually, and it is not from writers trembling under the uplifted scourge that we are to hope for it.