Richard Dawkins Quotes on Natural selection
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The world becomes full of organisms that have what it takes to become ancestors. That, in a sentence, is Darwinism.
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Each generation is a filter, a sieve; good genes tend to fall through the sieve into the next generation; bad genes tend to end up in bodies that die young or without reproducing.
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... but the dominance hierarchy itself is not something that natural selection favors or disfavors. What natural selection favors or disfavors is the individual behavior of which the dominance hierarchy is a manifestation. I would put war and overpopulation in that category.