Thus one can say: The real things of past time are given in the tran scendental object of experience, but for me they are objects and real in past time only insofar as I represent to myself that, in accordance with empirical laws, or in other words, the course of the world, a regressive series of possible perceptions (whether under the guidance of history or in the footsteps of causes and effects) leads to a time series that has elapsed as the condition of the present time, which is then represented as real only in connection with a possible experience and not in itself; so that all those events which have elapsed from an inconceivable past time prior to my own existence signify nothing but the possibility of prolonging the chain of experience, starting with the present perception, upward to the conditions that determine it in time.