It is plain that they are more blessed who believe and do not see, than those who do not believe unless they see [cf. John 20:29]. Faith without sight is indeed such that it spurns and refuses all proof, just as one who sees an object would do if another went about to prove [the existence] of the object seen. The same principle applies to faith. Trying to prove that an object is seen, when one sees it, calls it into doubt, for demonstrative proof has this effect. 1748, 10 March. Therefore, demonstrative proofs are only for those who will not believe anything unless they see it. Lest these remain in their blindness and become more blind, things must be demonstrated to them that ought not to be demonstrated-for example, that there is a God. This everyone ought to believe without arguments to prove it. Nevertheless, as is usual when something is demonstrated, every argument has something of doubt in it, and invites objections and thus stumbling blocks. 1748, 10 March.