"To the scientist, the universality of physical laws makes the cosmos a marvelously simple place. By comparison, human nature-the psychologist's domain-is infinitely more daunting."

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What scientists want next is a thorough comparison of what we and exosolar planets and vagabonds look like. Only in this way will we know whether our home life is normal or whether we live in a dysfunctional solar family.

— Neil deGrasse Tyson