"When sleep enters the body like smoke and man journeys into the abyss like an extinguished star that is lighted elsewhere, then all quarrel ceases, overworked nag that has tossed the nightmare grip of its rider."

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Anxieties about ourselves endure. If our proper study is indeed the study of humankind, then it has seemed-and still seems-to many that the study is dangerous. Perhaps we shall find out that we were not what we took ourselves to be. But if the historical development of science has indeed sometimes pricked our vanity, it has not plunged us into an abyss of immorality. Arguably, it has liberated us from misconceptions, and thereby aided us in our moral progress.

— Philip Kitcher