The 21st-century debates about animals can be traced to the ancient world, and the idea of a divine hierarchy. In the Book of Genesis (5th or 6th century BCE), Adam is given "dominion over the fish of the sea, and over the fowl of the air, and over the cattle, and over all the earth, and over every creeping thing that creepeth upon the earth." Dominion need not entail property rights, but it has been interpreted over the centuries to imply ownership.[12] Animal were things to be possessed and used, whereas man was created in the image of God, and was superior to everything else in nature.[13] The philosopher and mathematician, Pythagoras (c. 580Цc. 500 BCE), urged respect for animals, believing that human and nonhuman souls were reincarnated from human to animal, and vice versa.[14] Against this, Aristotle (384Ц322 BCE) argued that nonhuman animals had no interests of their own, ranking far below humans in the Great Chain of Being. He was the first to create a taxonomy of animals; he perceived some similarities between humans and other species, but argued for the most part that animals lacked reason (logos), thought (dianoia, nous), and belief (doxa).[11] One of Aristotle's pupils, Theophrastus (c. 371 Ц c. 287 BCE) argued that animals had reason too; he opposed eating meat on the grounds that it robbed them of life and was therefore unjust.[15] Theophrastus did not prevail; Richard Sorabji writes that current attitudes to animals can be traced to the heirs of the Western Christian tradition selecting the hierarchy that Aristotle sought to preserve.[11] Tom Beauchamp (2011) writes that the most extensive account in antiquity of how animals should be treated was written by the Neoplatonist philosopher Porphyry (234Цc. 305 CE), in his On Abstinence from Animal Food, and On Abstinence from Killing Animals. The Book of Genesis (from the Latin Vulgate, in turn borrowed or transliterated from Greek ???????, meaning "origin"; Hebrew: ????????????, Bere?syt, "In [the] beginning"), is the first book of the Hebrew Bible (the Tanakh) and the Christian Old Testament.[1] The basic narrative expresses the central theme: God creates the world and appoints man as his regent, but man proves disobedient and God destroys his world through the Flood. The new post-Flood world is equally corrupt, but God does not destroy it, instead calling one man, Abraham, to be the seed of its salvation. At God's command Abraham descends from his home into the land of Canaan, given to him by God, where he dwells as a sojourner, as does his son Isaac and his grandson Jacob. Jacob's name is changed to Israel, and through the agency of his son Joseph, the children of Israel descend into Egypt, 70 people in all with their households, and God promises them a future of greatness. Genesis ends with Israel in Egypt, ready for the coming of Moses and the Exodus. The narrative is punctuated by a series of covenants with God, successively narrowing in scope from all mankind (the covenant with Noah) to a special relationship with one people alone (Abraham and his descendants through Isaac and Jacob).[2] The book's author or authors appear to have structured it around ten "toledot" sections (the "these are the generations of..." phrases), but many modern commentators see it in terms of a "primeval history" (chapters 1Ц11) followed by the cycle of Patriarchal stories (chapters 12Ц50).[3] For Jews and Christians alike, the theological importance of Genesis centers on the covenants linking God to his Chosen People and the people to the Promised Land. Christianity has interpreted Genesis as the prefiguration of certain cardinal Christian beliefs, primarily the need for salvation (the hope or assurance of all Christians) and the redemptive act of Christ on the Cross as the fulfillment of covenant promises as the Son of God. Tradition credits Moses as the author of Genesis, Exodus, Leviticus, Numbers and most of Deuteronomy, but modern scholars increasingly see it as a product of the 6th and 5th centuries BC Genesis appears to be structured around the recurring phrase elleh toledot, meaning "these are the generations," with the first use of the phrase referring to the "generations of heaven and earth" and the remainder marking individualsЧNoah, the "sons of Noah", Shem, etc., down to Jacob.[6] It is not clear, however, what this meant to the original authors, and most modern commentators divide it into two parts based on subject matter, a "primeval history" (chapters 1Ц11) and a "patriarchal history" (chapters 12Ц50).[7] While the first is far shorter than the second, it sets out the basic themes and provides an interpretive key for understanding the entire book.[8] The "primeval history" has a symmetrical structure hinged around chapter 6Ц9, the flood story, with the events before the flood mirrored by the events after.[9] The "patriarchal history" recounts the events of the major patriarchs Abraham, Isaac and Jacob, to whom God reveals himself and to whom the promise of descendants and land is made, while the story of Joseph serves to take the Israelites into Egypt in preparation for the next book, Exodus