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"I have called this principle, by which each slight variation, if useful, is preserved, by the term Natural Selection."
The Origin of Species. Chap. iii.
Bartlett's Familiar Quotations, 9th ed. (Little, Brown, 1905), public domain
"We will now discuss in a little more detail the Struggle for Existence."
The Origin of Species. Chap. iii.
Bartlett's Familiar Quotations, 9th ed. (Little, Brown, 1905), public domain
"The expression often used by Mr. Herbert Spencer of the Survival of the Fittest is more accurate, and is sometimes equally convenient."
The Origin of Species. Chap. iii.
Bartlett's Familiar Quotations, 9th ed. (Little, Brown, 1905), public domain