The dichotomy has a profound originality in the long history of human beings who gradually increase the recognition of objective and subjective world characterized by the subdivision with human biometrics and thinking initially, the sound language and symbol system of social thinking in the second place, and the macro and micro development of thinking cognition more prominently. Based on the novel Angels and Demons by Dan Brown, the characteristics of dichotomy is probed and interpreted, portraying the opposite depiction of angels and demons with the figurative display of character attributes, and further revealing the application and influence of religion and science. Through deepening the thematic ideas of the novel from the transformation of angels and demons, the socially neutral viewpoints towards religion and science, the attitude toward history and reality, the interpersonal relationship without merciless slaughtering and with more humanistic feelings, the unity of body and spirit, come into view. Eventually, it leads to the ultimate inquiry of being angels or demons, well worthy of deep reflection of value rationality socially and psychologically.

Angels and Demons, dichotomy, ultimate inquiry, psychological tendency, humanistic duality, value rationality