XVII It Is Impossible to Be Convinced of the Existence of God
Can one honestly say that he is convinced of the existence of a being whose nature is not known, who remains inaccessible to all our senses, and of whose qualities we are constantly assured that they are incomprehensible to us? In order to persuade me that a being exists, or can exist, he must begin by telling me what this being is; in order to make me believe the existence or the possibility of such a being, he must tell me things about him which are not contradictory, and which do not destroy one another; finally, in order to convince me fully of the existence of this being, he must tell me things about him which I can comprehend, and prove to me that it is impossible that the being to whom he attributes these qualities does not exist.