Quote
By Charles Darwin
Furthermore, I am convinced that Natural Selection has been the main but not exclusive means of modification.
- Source
- On the Origin of Species by Means of Natural Selection, first edition, 1859 · Introduction, p. 6
- Read at
- Internet Archive (scan of the 1859 first edition, London: John Murray)
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About this quote
From the Introduction to On the Origin of Species, first edition (London: John Murray, 1859). Darwin is stating that natural selection is the chief cause of change in species, not the only one.