" Among the Founders, Thomas Jefferson wrote about race at greatest length. He thought blacks were mentally inferior to whites and biologically distinct: “[They] secrete less by the kidnies [sic], and more by the glands of the skin, which gives them a strong and disagreeable odor.” He hoped slavery would be abolished, but he did not want free blacks to remain in America: “When freed, [the Negro] is to be removed from beyond the reach of mixture.”
Jefferson was one of the first and most influential advocates of “colonization,” or returning blacks to Africa. He also believed in the destiny of whites as a racially distinct people. In 1786 he wrote, “Our Confederacy [the United States] must be viewed as the nest from which all America, North and South, is to be peopled.”
In 1801 he looked forward to the day “when our rapid multiplication will expand itself . . . over the whole northern, if not the southern continent, with a people speaking the same language, governed in similar forms, and by similar laws; nor can we contemplate with satisfaction either blot or mixture on that surface. "

― Jared Taylor , White Identity: Racial Consciousness in the 21st Century