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 advance of knowledge, blocked the paths of science in the Middle Ages, and obstructed its progress till the latter half of the nineteenth century. In every important field of scientific research, the ground was occupied by false views which the Church declared to be true on the infallible authority of the Bible. The Jewish account of Creation and the Fall of Man, inextricably bound up with the Christian theory of Redemption, excluded from free inquiry geology, zoology, and anthropology. The literal interpretation of the Bible involved the truth that the sun revolves round the earth. The Church condemned the theory of the antipodes. One of the charges against Servetus (who was burned in the sixteenth century; see below, p. 79) was that he believed the statement of a Greek geographer that Judea is a wretched barren country in spite of the fact that the Bible describes it as a land flowing with milk and honey. The Greek physician Hippocrates had based the study of medicine and disease on experience and methodical research. In the Middle Ages men relapsed to the primitive notions of a barbarous age. Bodily ailments were ascribed to occult agencies—the malice of the Devil or the wrath of God. St. Augustine said that the diseases of Christians were caused by demons,