"I never justify, sustain, or in any way or to any extent uphold this cruel, heartless, aimless unnecessary war."

“I do not believe that our friends at the South have any just idea of the state of feeling, hurrying at this moment to a pitch of intense exasperation, between those who respect their political obligations, and those who apparently have no impelling power but that which a fanatical position on the subject of domestic Slavery imparts. Without discussing the question of right — of abstract power to secede — I have never believed that actual disruption of the Union can occur without blood; and if, through the madness of Northern Abolitionists, that dire calamity must come, the fighting will not be along Mason's and Dixon's line merely. It be within our own borders, in our own streets, between the two classes of citizens to whom I have referred.”

“I speak of the war as fruitless; for it is clear that, prosecuted upon the basis of the proclamations of September 22d and September 24th, 1862, prosecuted, as I must understand these proclamations, to say nothing of the kindred blood which has followed, upon the theory of emancipation, devastation, subjugation, it cannot fail to be fruitless in every thing except the harvest of woe which it is ripening for what was once the peerless republic.”

“The storm of frenzy and faction must inevitably dash itself in vain against the unshaken rock of the Constitution. I shall never doubt it. I know that the Union is stronger a thousand times than all the wild and chimerical schemes of social change which are generated one after another in the unstable minds of visionary sophists and interested agitators. I rely confidently on the patriotism of the people, on the dignity and self-respect of the States, on the wisdom of Congress, and, above all, on the continued gracious favor of Almighty God to maintain against all enemies, whether at home or abroad, the sanctity of the Constitution and the integrity of the Union.”

“You have summoned me in my weakness; you must sustain me by your strength.”

“Franklin Pierce and the Consequences of Ambition" at Medium.com”