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— Carl Sagan"The secrets of evolution are death and time-the deaths of enormous numbers of lifeforms that were imperfectly adapted to the environment; and time for a long succession of small mutations."
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Organs, faculties, powers, capacities, or whatever else we call them; grow by use and diminish from disuse, it is inferred that they will continue to do so. And if this inference is unquestionable, then is the one above deduced from it-that humanity must in the end become completely adapted to its conditions-unquestionable also. Progress, therefore, is not an accident, but a necessity.
— Herbert Spencer
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From a human point of view, the difference between the mind of a human and that of a mountain goat is wonderful; from the point of view of the infinite ignorance that surrounds us, the difference is not impressive. Indeed, from that point of view, the goat may have the better mind, for he is more congenially adapted to his place, and he would not endanger his species or his planet for the sake of an idea.
— Wendell Berry
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