"Shortly before the 1860 election, Frederick Douglass offered a succinct summary of the dilemma confronting opponents of slavery like Lincoln, who worked within the political system rather than outside it. Abstractly, Douglass wrote, most northerners would agree that slavery was wrong. The challenge was to find a way of 'translating antislavery sentiment into antislavery action'. The constitution barred interference with slavery in the states where it already existed. For Lincoln, as for most Republicans, antislavery action meant not attacking slavery where it was but working to prevent slavery's westward expansion. Lincoln, however, did talk about a future without slavery. The aim of the Republican Party, he insisted, was to put the institution on the road to 'ultimate extinction', a phrase he borrowed from Henry Clay. Ultimate extinction could take a long time. Lincoln once said that slavery might survive for another hundred years. But to the south, Lincoln seemed as dangerous as an abolitionist, because he was committed to the eventual end of slavery. This was why his election in 1860 led inexorably to secession and civil war."