Did NOT agree--abolitionist thought came in many forms to include free-soilers, gradual emancipation, recolonization, and full emancipation.
Free-soil thinkers did want to end slavery but the expansion of it believing the system could be contained and then killed.
Gradual emancipators wanted to free slaves but do so slowly so each group could be transitioned.
Recolonization thinkers wanted to free slaves but then move them back to Africa. The country of Liberia was set up for this purpose.
Full emancipators wanted slavery to end immediately and for all.