1004. And this brings us to the point where we have come through all the most important phenomena appertaining to the analysis of the living being that are incontestable and without which the being's existence or experience of life would be totally impossible. There are of course many more details in the analysis of this being, but they are not so fundamental as those pointed out above, which are in reality a fundamental, in-depth study of life's twelve basic answers. And just as each of these basic answers is absolutely necessary in order for the experience of life to take place, so too are each of these 63 life substances an absolute requirement for the existence of perfect life. If but one of these substances were missing, we would never ever have been able to experience life at all, for there would be no life to experience. Each and every one of them is a tiny part of life's spiral cycle. To take out one of these parts would mean that in the circular path of the cycle a link would be missing or there would be a break. And such a break in the circular path would mean that it had a beginning and an end and so could no longer be an eternal spiral cycle; it would have to be a temporal phenomenon, something that was merely transitory. But something that is merely transitory is an exact opposite of the phenomenon that is eternity itself.