During the scientific revolution, William Harvey (1579–1657) correctly described and demonstrated the closed circulatory system of blood. Robert Burton (1577–1640) described (and lived out) the nature of psychological depression. With Harvey’s achievement, the inside of the human body could be understood as an orderly mechanical (hydraulic) system; with Burton’s achievement came the recognition of mental illness as a secular, pedestrian process. Both achievements were practical and gratifying rewards for scientific investigators, as well as their public.