"This is not remarkable, for, as we know, reality is not a function of the event as event, but of the relationship of that event to past, and future, events. We seem here to have a paradox: that the reality of an event, which is not real in itself, arises from the other events which, likewise, in themselves are not real. But this only affirms what we must affirm: that direction is all. And only as we realize this do we live, for our own identity is dependent upon this principal."