It was not the Republicans of the North alone that appealed to Lincoln. Unionists of the South came to him for pledges that he would do nothing, for assurances that there was nothing to fear from his election, and he went so far as to make an exception in their case to gratify them. In December he wrote a letter to Alexander H. Stephens, whom he had known and admired in Congress, marked "For your eye only," in which he stated his position in the most positive and unmistakable language, and asked, "Do the people of the South really entertain fears that a Republican administration would directly or indirectly interfere with the slaves? If they do, I wish to assure you as once a friend, and still, I hope, not an enemy, that there is no cause for such fears. The South would be in no more danger in this respect than it was in the days of Washington. I suppose, however, that this does not meet the case. You think slavery is right and ought to be extended, while we think it is wrong and ought to be restricted. That, I suppose, is the rub. It is certainly the only substantial difference between us." General Duff Green came to Springfield in December, 1860, as an emissary from President Buchanan to invite the President-elect to Washington for a conference upon the situation, with the hope that his presence there might prevent civil war, and General Green was bold enough to tell him that, if he did not go, "upon his conscience must rest the blood that would be shed." Here Lincoln's political shrewdness and diplomacy were demonstrated in as conspicuous a manner, perhaps, as at any other crisis in his life. He detected at once the intention to unload upon him the responsibility for disunion and war, and met it with a counter-proposition which must have excited the admiration of the conspirators who were trying to entrap him. He received General Green with great courtesy, heard him with respectful attention, and gave him a letter in which he said that he did not desire any amendment to the Constitution, although he recognized the right of the American people to adopt one; that he believed in maintaining inviolate the rights of each State to control its own domestic institutions; and that he considered the lawless invasion by armed force of the soil of any State or Territory as the gravest of crimes. While those were his sentiments, and while they indicated the policy he should pursue as President, he would not consent to their publication unless the Senators from Georgia, Alabama, Mississippi, Florida, Louisiana, and Texas would sign a pledge which he had written below his signature to this letter and upon the same piece of paper. It was a pledge "to suspend all action for the dismemberment of the Union until some act deemed to be violative of our rights shall be done by the incoming administration." Thus the responsibility was thrown back upon the representatives of the seceding States, and it is unnecessary to say that Duff Green's mission