Although the entire book is traditionally ascribed to Daniel the seer, chapters 1–6 are in the voice of an anonymous narrator, except for chapter 4 which is in the form of a letter from king Nebuchadnezzar; only the second half (chapters 7–12) is presented by Daniel himself, introduced by the anonymous narrator in chapters 7 and 10.[35] The real author/editor of Daniel was probably an educated Jew, knowledgeable in Greek learning, and of high standing in his own community. The book is a product of "Wisdom" circles, but the type of wisdom is mantic (the discovery of heavenly secrets from earthly signs) rather than the wisdom of learning—the main source of wisdom in Daniel is God's revelation.[36][37]