• Natural selection acts solely by accumulating slight successive favorable variations, it can produce no great or sudden modification; it can act only by very short steps.

    Charles Darwin: Natural selection acts solely by accumulating slight successive favorable variations, it can produce no great or sudden modification; it can act only by very short steps.
    Charles Darwin (2015). “Delphi Complete Works of Charles Darwin (Illustrated)”, p.3702, Delphi Classics