"He that pursues fame with just claims, trusts his happiness to the winds; but he that endeavors after it by false merit, has to fear, not only the violence of the storm, but the leaks of his vessel."

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The essence of Darwinism lies in its claim that natural selection creates the fit. Variation is ubiquitous and random in direction. It supplies raw material only. Natural selection directs the course of evolutionary change.

— Stephen Jay Gould