How differently the respective courses of the Democratic and Republican partles incidentally bear on the question of forming a will-a public sentiment-for colonization, is easy to see. The Republicans inculcate. with whatever of ability they can, that the Negro is a man; that his bondage is cruelly wrong, and that the field of his oppression ought not to be enlarged. The Democrats deny his manhood: deny, or dwarf to insignificance, the wrong of his bondage; so far as possible, crush all sympathy for him, and cultivate and excite hatred and disgust against him: compliment themselves as Union-savers for doing so: and call the indefinite outspreading of his bondage "a sacred right of self-govemment."

In the paragraph, Lincoln lays out stark differences between the two political parties.
Summarize the stances of each political party in their views of slavery and African Americans.