 Given the prominence of revealed texts in Christianity, a useful starting point to examine the relationship between Christianity and science is the two books metaphor (see Tanzella-Nitti 2005 for an overview): God revealed Godself through the “Book of Nature”, with its orderly laws, and the “Book of Scripture”, with its historical narratives and accounts of miracles. Augustine (354–430) argued that the book of nature was the more accessible of the two, since scripture requires literacy whereas illiterates and literates alike could read the book of nature. Maximus Confessor (c. 580–662), in his Ambigua (see Louth 1996 for a collection of and critical introduction to these texts) compared scripture and natural law to two clothes that envelop the Incarnated Logos: Jesus’ humanity is revealed by nature, whereas his divinity is revealed by the scriptures. During the Middle Ages, authors such as Hugh of St. Victor (ca. 1096–1141) and Bonaventure (1221–1274) began to realize that the book of nature was not at all straightforward to read. Given that original sin marred our reason and perception, what conclusions could humans legitimately draw about ultimate reality? Bonaventure used the metaphor of the books to the extent that “liber naturae” was a synonym for creation, the natural world. He argued that sin has clouded human reason so much that the book of nature has become unreadable, and that scripture is needed as an aid as it contains teachings about the world.