We can not close our eyes to the sad and solemn fact that war does exist. The Government must be maintained, its enemies overthrown, and the more stupendous our preparations the less the bloodshed, and the shorter the struggle. But we must remember certain restraints on our action even in time of war. We are a Christian people, and the war must be prosecuted in a manner recognized by Christian nations. We must not invade Constitutional rights. The innocent must not suffer, nor women and children be the victims. Savages must not be let loose. But while I sanction no war on the rights of others, I will implore my countrymen not to lay down their arms until our own rights are recognized. (Cheers.) The Constitution and its guarantees are our birthright, and I am ready to enforce that inalienable right to the last extent. We can not recognize secession. Recognize it once, and you have not only dissolved government, but you have destroyed social order--upturned the foundations of society. You have inaugurated anarchy in its worst form, and will shortly experience all the horrors of the French Revolution. Then we have a solemn duty--to maintain the Government. The greater our unanimity, the speedier the day of peace. We have prejudices to overcome from the few short months since of a fierce party contest. Yet these must be allayed. Let us lay aside all criminations and recriminations as to the origin of these difficulties. When we shall have again a country with the United States flag floating over it, and respected on every inch of American soil, it will then be time enough to ask who and what brought all this upon us. I have said more than I intended to say. (Cries of "Go on.") It is a sad task to discuss questions so fearful as civil war; but sad as it is, bloody and disastrous as I expect it will be, I express it as my conviction before God, that it is the duty of every American citizen to rally round the flag of his country. I thank you again for this magnificent demonstration. By it you show you have laid aside party strife. Illinois has a proud position--United, firm, determined never to permit the Government to be destroyed. (Prolonged cheering.) PRESIDENT LINCOLN'S FIRST CALL FOR TROOPS. APRIL 15th, 1861. _Whereas_, the laws of the United States have been for some time past, and now are, opposed, and the execution thereof obstructed, in the States of South Carolina, Georgia, Alabama, Florida, Mississippi, Louisiana, and Texas, by combinations too powerful to be suppressed by the ordinary course of judicial proceedings, or by the powers vested in the marshals by law; now, therefore, I, Abraham Lincoln, President of the United States, in virtue of the power in me vested by the Constitution and the laws, have thought fit to call forth the Militia of the several States of the Union to the aggregate number of 75,000, in order to suppress said combinations, and to cause the laws to be duly executed.