D. H. Wheeler, Popular Science Monthly (1873)
“ All human life varies incessantly; the new generation sees life in new aspects, and rejoices in other colors. The variation comes in constantly; and it is our safety. Our inborn conservatism would kill us off if the variation did not help our inborn radicalism in the else unequal struggle. That which is, like the bird in the hand, is worth two reforms in the bush, for a contest. In short, nations grow, progress, thrive, through the law of variation from inheritance. "One of the greatest pains to human nature is the pain of a new idea;" ”
