A warning that their civilization be never cast back from man to brute as ours has been. And if God send that they heed that warning, none among them ever shall die as I die now, the last man of all men, looking down through the sunset into the familiar but infinitely strange city, where roam the hordes that once were men. Sunset! Sunset for our civilization, our races, as for the earth. But, dying, I know that after their passing there must come with the slow upward climb of evolution new races, new civilizations, as surely as after sunset and night must come the——
The End
[1] Sadism, of which this word is the adjective, is a mental perversion towards cruelty.