نقطة زرقاء باهته - Carl Sagan

I’m told that Sherlock Holmes never said, “Elementary, my dear Watson” (at least in the Arthur Conan Doyle books) Jimmy Cagney never said, “You dirty rat”; and Humphrey Bogart never said, “Play it again, Sam.” But they might as well have, because these apocrypha have firmly insinuated themselves into popular culture.

neither we nor our planet enjoys a privileged position in Nature. This insight has since been applied upward to the stars, and sideways to many subsets of the human family, with great success and invariable opposition. It has been responsible for major advances in astronomy, physics, biology, anthropology, economics and politics. I wonder if its social extrapolation is a major reason for attempts at its suppression.

In a set of classic experiments, the psychologist Z. Y. Kuo6 showed that almost all kittens who witness their mother killing and eating a rodent eventually do so themselves. However, when kittens are raised in the same cage with a rat, never seeing any other rat, and never seeing a cat kill a rat, then they almost never kill rats themselves. When kittens have a rat for a littermate and also witness their mothers killing rats outside the cage, about half of them learn to kill — but they tend to kill only the kinds of rat they had seen their mothers kill, and not the kinds that they grew up with. Finally, when kittens are given an electric shock each time they see a rat, they soon learn not to kill rats — indeed, to run in terror from them.