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natural selection Quotes

Seven of the best book quotes about natural selection
  1. #1
    “I think it inevitably follows, that as new species in the course of time are formed through natural selection, others will become rarer and rarer, and finally extinct. The forms which stand in closest competition with those undergoing modification and improvement will naturally suffer most.”
  2. #2
    “On the theory of natural selection we can clearly understand the full meaning of that old canon in natural history, ‘Natura non facit saltum.’ This canon, if we look only to the present inhabitants of the world, is not strictly correct, but if we include all those of past times, it must by my theory be strictly true.”
  3. #3
    “Owing to this struggle for life, any variation, however slight and from whatever cause proceeding, if it be in any degree profitable to an individual of any species, in its infinitely complex relations to other organic beings and to external nature, will tend to the preservation of that individual, and will generally be inherited by its offspring.”
  4. #4
    “But natural selection, as we shall hereafter see, is a power incessantly ready for action, and is immeasurably superior to man’s feeble efforts, as the works of nature are to those of art.
  5. #5
    “A grain in the balance will determine which individual shall live and which shall die - which variety or species shall increase in number, and which shall decrease, or finally become extinct.”
  6. #6
    “One general law, leading to the advancement of all organic beings, namely, multiply, vary, let the strongest live and the weakest die.”
  7. #7
    “As natural selection acts by competition, it adapts the inhabitants of each country only in relation to the degree of perfection of their associates; so that we need feel no surprise at the inhabitants of any one country, although on the ordinary view supposed to have been specially created and adapted for that country, being beaten and supplanted by the naturalized productions from another land.”
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