"The legal effect of this bill, if it be passed as reported by the Committee on Territories, is neither to legislate slavery into these territories, nor out of them; but to leave the people to do as they please, under the provisions and subject to the limitations of the Constitution of the United States. Why should not this principle prevail? Why should any man, North or South, object to it? I will especially address the argument to my own section of country, and ask why should any northern man object to this principle? If you will review the history of the slavery question in the United States, you will see that all the great results in behalf of free institutions which have been worked out, have been accomplished by the operation of this principle and by it alone. "When these States were colonies of Great Britain, every one of them was a slaveholding province. When the Constitution of the United States was formed, twelve out of the thirteen were slaveholding States. Since that time six of those States have become free. How has this been effected? Was it by virtue of abolition agitation in Congress? Was it in obedience to the dictates of the Federal Government? Not at all; but they have become free States under the silent but sure and irresistible working of that great principle of self-government, which teaches every people to do that which the interests of themselves and their posterity, morally and pecuniarily, may require. "Under the operation of this principle, New Hampshire became free, while South Carolina continued to hold slaves; Connecticut abolished slavery, while Georgia held on to it; Rhode Island abandoned the institution, while Maryland preserved it; New York, New Jersey, and Pennsylvania abolished slavery, while Virginia, North Carolina, and Kentucky, retained it. Did they do it at your bidding! Did they do it at the dictation of the Federal Government? Did they do it in obedience to any of your Wilmot Provisoes or Ordinances of '87? Not at all; they did it by virtue of their rights as freemen under the Constitution of the United States, to establish and abolish such institutions as they thought their own good required. "The leading feature of the Compromise of 1850 was Congressional non-intervention as to slavery in the territories; that the people of the territories and of all the States, were to be allowed to do as they pleased upon the subject of slavery, subject only to the provisions of the Constitution of the United States.