American nationalism
Like most contemporaries, John Quincy Adams' views on slavery evolved over time. Historian David F. Ericson asks why he never became an abolitionist. He never joined the movement called "abolitionist" by historians—the one led by William Lloyd Garrison—because it demanded the immediate abolition of slavery and insisted it was a sin to enslave people. Further, abolitionism meant disunion and Adams was a staunch champion of American nationalism and union.