57. "The eye sees only because it is formed and placed as it is." La Mettrie doubts whether there is any purpose in the world. Condillac, on the other hand, teaches that purpose and intelligence are shown forth in the universe. "Can we see the order of the parts of the universe, the subordination among them, and notice how so many different things compose such a permanent whole, and remain convinced that the cause of the universe is a principle without any knowledge of its effects, which without purpose, without intelligence, relates each being to particular ends, subordinated to a general end?" [126] 58. "Non nostrum inter vos tantas componere lites." Vergil, Eclogue III, line 108. 59. "The universe will never be happy unless it is atheistic." Although La Mettrie calls this a "strange opinion" it is clear that he secretly sympathizes with it. Holbach affirms this doctrine very emphatically. "Experience teaches us that sacred opinions were the real source of the evils of human beings. Ignorance of natural causes created gods for them. Imposture made these gods terrible. This idea hindered the progress of reason." [127] "An atheist ... is a man who destroys chimeras harmful to the human race, in order to lead men back to nature, to experience, and to reason, which has no need of recourse to ideal powers, to explain the operations of nature." [128] 60. "The soul is therefore but an empty word." Contrast this with Descartes's statement: "And certainly the idea I have of the human mind ... is incomparably more distinct than the idea of any corporeal object." [129] Compare this doctrine, also, with Holbach's assertion: "Those who have distinguished the soul from the body seem to have only distinguished their brains from themselves. Truly the brain is the common center, where all the nerves spread in all parts of the human body, terminate and join together.... The more experience we have, the more we are convinced that the word 'spirit' has no meaning even to those who have invented it, and can be of no use either in the physical or in the moral world." [130] 61. William Cowper (1666-1709) was an English anatomist. He was drawn into a controversy with Bidloo, the Dutch physician, by publishing under his own name Bidloo's work on the anatomy of human bodies. His principal works are: "Myotamia reformata" (London, 1694) and "Glandularum descriptio" (1702). [131] 62. William Harvey (1578-1657), an English physician and physiologist, is renowned for his discovery of the circulation of the blood. He was educated at Canterbury and Cambridge, and took his doctor's degree at Cambridge in 1602. During his life he held the position of Lumleian lecturer at the College of Physicians, and of physician extraordinary to James I. His principal works are: "Exercitatio de motu cordis et sanguinis" (1628), and "Exercitationes de generatione animalium" (1651). [132]