We haven't the habit of candidly facing this danger. We read our biological history but we don't take it in. We blandly assume we were always "intended" to rule, and that no other outcome could even be considered by Nature. This is one of the remnants of ignorance certain religions have left: but it's odd that men who don't believe in Easter should still believe this. For the facts are of course this is a hard and precarious world, where every mistake and infirmity must be paid for in full. If mankind ever is swept aside as a failure however, what a brilliant and enterprising failure he at least will have been. I felt this with a kind of warm suddenness only today, as I finished these dreamings and drove through the gates of the park. I had been shutting my modern surroundings out of my thoughts, so completely, and living as it were in the wild world of ages ago, that when I let myself come back suddenly to the twentieth century, and stare at the park and the people, the change was tremendous. All around me were the well-dressed descendants of primitive animals, whizzing about in bright motors, past tall, soaring buildings. What gifted, energetic achievers they suddenly seemed! I thought of a photograph I had once seen, of a ship being torpedoed. There it was, the huge, finely made structure, awash in the sea, with tiny black spots hanging on to its side--crew and passengers. The great ship, even while sinking, was so mighty, and those atoms so helpless. Yet, it was those tiny beings that had created that ship. They had planned it and built it and guided its bulk through the waves. They had also invented a torpedo that could rend it asunder. It is possible that our race may be an accident, in a meaningless universe, living its brief life uncared-for, on this dark, cooling star: but even so--and all the more--what marvelous creatures we are! What fairy story, what tale from the Arabian Nights of the jinns, is a hundredth part as wonderful as this true fairy story of simians! It is so much more heartening, too, than the tales we invent. A universe capable of giving birth to many such accidents is--blind or not--a good world to live in, a promising universe. And if there are no other such accidents, if we stand alone, if all the uncountable armies of planets are empty, or peopled by animals only, with no keys to thought, then we have done something so mighty, what may it not lead to! What powers may we not develop before the Sun dies! We once thought we lived on God's footstool: it may be a throne.