Of all the differences between man and the lower animals, the moral sense or conscience is by far the most important . . . [I]t is summed up in that short but imperious word ought, so full of high significance.… — Charles Darwin Copy Share Image
Of all the differences between man and the lower animals, the moral sense or conscience is by far the most important. This sense, as Mackintosh remarks, "has a rightful supremacy over every other principle of human action"; it is summed… — Charles Darwin Copy Share Image