"Satan is never more successful than under the guise of an angel of light"

...The humanitarians are more dangerous in principle than the egoists, for they have the appearance of building on a broader and deeper foundation, of being more Christian, more philosophic, more generous and philanthropic; but Satan is never more successful than under the guise of an angel of light. His favorite guise in modern times is that of philanthropy. He is a genuine humanitarian, and aims to persuade the world that humanitarianism is Christianity, and that man is God; that the soft and charming sentiment of philanthropy is real Christian charity; and he dupes both individuals and nations, and makes them do his work, when they believe they are earnestly and most successfully doing the work of God.

Your leading abolitionists are as much affected by satanophany as your leading confederates, nor are they one whit more philosophical or less sophistical. The one loses the race, the other the individual, and neither has learned to apply practically that fundamental truth that there is never the general without the particular, nor the particular without the general, the race without individuals, nor individuals without the race. The whole race was in Adam, and fell in him, as we are taught by the doctrine of original sin, or the sin of the race, and Adam was an individual, as we are taught in the fact that original sin was in him actual or personal sin...

      -- Orestes Brownson, The American Republic, 1866