"Organisms [...] are directed and limited by their past. They must remain imperfect in their form and function, and to that extent unpredictable since they are not optimal machines. We cannot know their future with certainty, if only because a myriad of quirky functional shifts lie within the capacity of any feature, however well adapted to a present role."

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Society never progresses because the majority one day wakes up and says, “Let’s do things differently.” The majority didn’t wake up and say, “Oh, let’s just free the slaves.” ... Society always progressed because a relatively small group of people — usually considered outrageous radicals by the status quo of their time — had a better idea and articulated another way. That’s simply how evolution works; it’s the mutation — the member of the species who does things differently - that points the way to the future because they’re better adapted for survival.

— Marianne Williamson