This anatomy of Burton's includes the soul, and here are some particulars of it. "According to Aristotle, the soul is defined to be emtelecheia, ... the perfection or first act of an organical body having power of life.... But many doubts arise about the essence, subject, seat, distinction and subordinate faculties of it.... Some make one soul; ... others, three.... The common division of the soul is into three principal faculties--vegetal, sensible and rational." The soul of man includes all three; for the "sensible includes vegetal and rational both; which are contained in it (saith Aristotle) _ut trigonus in tetragono_, as a triangle in a quadrangle.... Paracelsus will have four souls, adding to the three grand faculties a spiritual soul: which opinion of his Campanella in his book _De Sensu Rerum_ much labors to demonstrate and prove, because carcases bleed at the sight of the murderer; with many such arguments." These are not the wanderings of ignorance; they represent the whole of human knowledge, and are an epitome made up from Aristotle, Galen, Vesalius, Fallopius, Wecker, Melancthon, Feruclius, Cicero, Pico Mirandola, Paracelsus, Campanella, Taurellus, Philip, Flavius, Macrobius, Alhazen the Arabian, Vittellio, Roger Bacon, Baptista Porta, Cardan, Sambucus, Pliny, Avicenna, Lucretius, and such another list as makes one weary with the very names of authorities. These details of antique science brought face to face with the weighing of air at Gresham College, and with Sir Isaac Newton, represent with sufficient sharpness the change from the old reign of enmity between Nature and man, from the stern ideal of justice to the later reign of love which embraces in one direction, God, in another, fellow-man, in another, physical nature.