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.