Lecture I
Kant tried to refute this proof by showing that out of a “concept” one could not derive the existence of a thing, and for this he coined the famous saying I have often mentioned: A hundred actual thalers are not less and not more than a hundred possible thalers. That is, if a thaler has three hundred pfennigs, then for each one of a hundred possible thalers one must reckon three hundred pfennigs: and in like manner three hundred pfennigs for each of a hundred actual thalers. Thus a hundred possible thalers contain just as much as a hundred actual thalers, i.e. it makes no difference whether I think of a hundred actual or a hundred possible thalers. Hence one may not derive existence from the mere thought of an absolutely perfect Being, because the mere thought of a possible God would have the same attributes as the thought of an actual God.