Plato’s ghost

“An old-time classification of the human faculties will serve to explain the development of American thought in the eighteenth century, a development which led to the overthrow of high Calvinism. As there were three divisions of the human mind—intellect, sensibility, and will, so were there three divisions among the enemies of orthodoxy. Those who followed the intellect were the rationalists, or deists. Those who followed sensibility were the “hot” men, or enthusiasts. Those who followed the will were the ethical reformers, who emphasized the conscious cultivation of morality rather than a divinely wrought change in man’s nature.” — from The Cambridge History of English and American Literature, Vol. XV, Ch. 5