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 pressed with irresistible clearness, to induce a court of justice to suppose a design to effect such object." It is well known, however, that these two declarations are little more than new forms for the ancient rule of the common law, as expressed by Fortescue: Impius et crudelis judicandus est qui Libertati non favet: He is to be adjudged impious and cruel who does not favor Liberty; and, as expressed by Blackstone, "The law is always ready to catch at any thing in favor of Liberty."

But, as no prescription runs against the King, so no prescription is allowed to run against Slavery, while all the early victories of Freedom are set aside by the Slave-masters of to-day. The prohibition of Slavery in the Missouri Territory, and all the precedents, legislative and judicial, for the exercise of this power, admitted from the beginning until now, have been overturned; but at last, bolder grown Slave-masters do not hesitate to assail that principle of jurisprudence which makes Slavery the creature of "positive law" alone, to be upheld only by words of "irresistible clearness." The case of Somerset, in which this great rule was declared, has been impeached on this floor, as the Declaration of Independence has been impeached also. And here the Senator from Louisiana [] has taken the lead. He has dwelt on the assertion that, in the history of English law, there were earlier cases, where a contrary principle was declared. But permit me to say that no such cases, even if they exist in authentic reports, can impair the influence of this well-considered authority. The Senator knows well that an old and barbarous case is a poor answer to a principle, which is brought into activity by the demands of an advancing Civilization, and which once recognized can never be denied; that jurisprudence is not a dark lantern, shining in a narrow circle, and never changing, but a gladsome light, which, slowly emerging from original darkness, grows and spreads with human improvement, until at last it becomes as broad and general as the Light of Day. When the Senator, in this age — leaguing all his forces — undertakes to drag down that immortal principle, which made Slavery impossible in England, as, thank God! it makes Slavery impossible under the Constitution, he vainly tugs to drag down a luminary from the sky.

The enormity of the pretension that Slavery is sanctioned by