The secrets of evolution are death and time-the deaths of enormous num…

Carl Sagan
415 citations
The secrets of evolution are death and time-the deaths of enormous numbers of lifeforms that were imperfectly adapted to the environment; and time for a long succession of small mutations. ✨ Carl Sagan (2011). Cosmos, p.49, Ballantine Books
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The secrets of evolution are death and time-the deaths of enormous numbers of lifeforms that were imperfectly adapted to the environment; and time for a long succession of small mutations. ✨ Carl Sagan (2011). Cosmos, p.49, Ballantine Books

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