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Marchant, James

"Alfred Russel Wallace: Letters and Reminiscences, Vol. 1"

So that whether the
dangers of existence be of the kind produced by excess of fertility, or
of any other kind, it is clear that by the ceaseless exercise of the
faculties needed to contend with them, and by the death of all men who
fail to contend with them successfully, there is ensured a constant
progress towards a higher degree of skill, intelligence,
self-regulation--a better co-ordinance of actions--a more complete
life."
Up to the period of the publication of the "Origin of Species" and the
first conception of the scheme of the Synthetic Philosophy there had
been no communication between Darwin and Spencer beyond the presentation
by Spencer of a copy of his Essays to Darwin in 1858, which was duly
acknowledged. But by the time the "Origin of Species" had been before
the public for eight years, the Darwinian principle of selection had
become an integral part of the Spencerian mechanism of organic
evolution. Indeed the term "survival of the fittest," approved by both
Darwin and Wallace as an alternative for "natural selection," was, as is
well known, introduced by Spencer.


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