War is an Alien Threat

More than a century ago a young Frenchman, Alexis de Tocqueville, visited America. After that visit he predicted that the two great powers of the future world would be, on one hand, the United States, which would be built, as he said, ``by the plowshare,'' and, on the other, Russia, which would go forward, again, as he said, ``by the sword.'' Yet need it be so? Cannot swords be turned to plowshares? Can we and all nations not live in peace? In our obsession with antagonisms of the moment, we ...

 Carl Sagan Puts Our Place in the Cosmos in Perspective

Our posturings, our imagined self-importance, the delusion that we have some privileged position in the Universe, are challenged by this point of pale light. Our planet is a lonely speck in the great enveloping cosmic dark. In our obscurity, in all this vastness, there is no hint that help will come from elsewhere to save us from ourselves. The Earth is the only world known so far to harbor life. There is nowhere else, at least in the near future, to which our species could migrate. Visit, y...