Book of Nature – Wikipedia, the free encyclopedia (en.wikipedia.org)

The Book of Nature is a religious and philosophical concept originating in the Latin Middle Ages which views nature as a book to be read for knowledge and understanding. There also was a book written by Konrad of Megenberg in the 1300s with the original German title of “Buch der Natur”.[1] Early theologians believed the Book of Nature was a source of God’s revelation to mankind: when read alongside sacred scripture, the “book” of nature and the study of God’s creations would lead to a knowledge of God himself. The concept corresponds to the early Greek philosophical belief that man, as part of a coherent universe, is capable of understanding the design of the natural world through reason. The concept is frequently deployed by philosophers, theologians, and scholars.

The first use of the phrase is unknown. However, Galileo used the phrase when he wrote of how “the book of nature [can become] readable and comprehensible.”

Book: https://archive.org/details/bookofnature00good