1958: the crisis in historical judgment -- 1858: Lincoln versus Douglas: the alternatives -- Slavery -- Manifest destiny -- The repeal of the Missouri Compromise I: the legal power and practical impotence of federal prohibitions of slavery in the territories -- The repeal of the Missouri Compromise II: did the Compromise of 1850 "supersede" the Missouri Compromise? -- The repeal of the Missouri Compromise III: what Douglas intended on January 4, 1854 -- The repeal of the Missouri Compromise IV: tragedy: the extremes crush the mean -- The teaching concerning political salvation -- The teaching concerning political moderation -- The legal tendency toward slavery expansion -- The political tendency toward slavery expansion -- The intrinsic evil of the repeal of the Missouri Compromise -- The universal meaning of the Declaration of Independence -- The form and substance of political freedom in the modern world -- Popular sovereignty: true and false -- The meaning of equality: abstract and political -- The "natural limits" of slavery expansion -- Did the Republicans abandon Lincoln's principles after the election of 1860? -- The end of manifest destiny -- Appendix I: some of the historical background to the Lincoln-Douglas debates -- Appendix II: some notes on the Dred Scott decision