"Aristotle maintains that this gas, or astral emanation, escaping from inside the earth, is the sole sufficient cause, acting from within outwardly for the verification of every living being and plant upon the external crust. In answer to the skeptical negators of his century, Cicero, moved by a just wrath, exclaims : "And what can be more divine than the exhalations of the earth, which affect the human soul so as to enable her to predict the future ? And could the hand of time evaporate such a virtue?"... *(Book I, Section 18 De Divinatione – On Divination) Do modem experimentalists claim to be wiser than Cicero, and say that this eternal force has evaporated, and that the springs of prophecy are dry? p. 200"