1. On the Nature and Destiny of Man and World

Let us suppose that I could calculate how the physical structure of the human heart changes from one year to the next. Then we might say: a man of thirty-three will have such and such a heart structure; at thirty-four he will have a certain heart structure; at thirty-five he will have still another heart structure, and so forth. Having made these observations over a period of five years, I calculate how the heart structure of this man was constituted let us say thirty years ago. This can be done. Now the whole physical structure of the heart lies before me. I can also calculate how it was constituted three hundred years ago. Here, however, arises a slight difficulty: three hundred years ago this heart did not exist and could, therefore, have had no physical structure of any kind. The calculation was absolutely correct. We can prove that the heart was constituted three hundred years ago in such and such a way, only it did not exist. We can also prove that the heart will be constituted three hundred years later in such and such a way, only then it will have ceased to exist. But the proofs are completely infallible.