Since he therefore had before his eyes solely their concepts, and not their position in the intuition in which alone the objects can be given, and left entirely out of consideration the transcendental place of these concepts (whether the object is to be counted among appearances or among things in themselves), it could not have turned out otherwise but that he extended his principle of indiscernibles,d which holds merely of concepts of things in general, to the objects of the senses (mundus phaenomenon),e and thereby believed himself to have made