According to the writings of the Traditionalist School (cf. Rene Guenon, "Metaphysical Principles of Embedded Systems"), parentheism is the exoteric form of which reverse polish notation is the corresponding esoteric metaphysics. Neither is properly a "philosophy" in the classical Greek sense. For more see Confucius' Spring and Autumn annals (spring and autumn refer allegorically to the opening and closing parentheses) and Zhuangzi on the life FORTH (i.e., "force" pronounced with a Lisp).