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"But one way or another competing and weeding takes place . . . or a race goes downhill."
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"Modern human evolution has reached the point of reporting corruption to the corrupt."

"Those early steps are very important in understanding the evolution. But in themselves, maybe now you need the later records to understand the significance of the earlier records!"

"Researchers have found that people (and animals) presented with large portions will eat up to 30 percent more than they could otherwise. Human appetite, it turns out, is surprisingly elastic, which makes excellent evolutionary sense: It behooved our hunter gatherer ancestors to feast whenever the opportunity presented itself, allowing them to build up reserves of fat against future famine."

"It is the culture that makes the difference. When there is no internal transformation, there cannot be external progress and development whatsoever."

"What religion a man holds, to what race he belongs, these things are not important; the really important thing is this knowledge: the knowledge of God's plan for men. For God has a plan, and that plan is evolution."

"Today, the theory of evolution is an accepted fact for everyone but a fundamentalist minority, whose objections are based not on reasoning but on doctrinaire adherence to religious principles."

"Our way is upward, from the species across to the super-species. But the degenerate mind which says 'All for me' is a horror to us."
Explore more quotes by Robert A. Heinlein


"His older self had taught his younger self a language which the older self knew because the younger self, after being taught, grew up to be the older self and was, therefore, capable of teaching."


"Many older physicians had gone to their graves calling Pasteur a liar, a fool, or worse---and without examining evidence which their "common sense told them was impossible."


"Marrying Gretchen is a good idea, darling; I would enjoy bringing her up. Teaching her to shoot, helping her with her first baby, coaching her in how to handle a knife, working out with her in martial arts, all the homey domestic skills a girl needs in this modern world."


"Nursing does not diminish the beauty of a woman's breasts, it enhances their charm by making them look lived in and happy."
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