It is astonishing to realize that until Galileo performed his experiments on the acceleration of gravity in the early seventeenth century, nobody questioned Aristotle's falling balls. Nobody said, Show Me!
Neil deGrasse TysonTo 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.
Neil deGrasse TysonDoes the full moon affect people's behavior, you ask? Yup. It makes people think the full moon affects people's behavior.
Neil deGrasse TysonWe only went to the moon for military reasons. The space enthusiasts of the day kept saying, "Oh, we're on the moon; we should be on Mars in ten years." That's if it was driven by exploration, but it's never been driven by exploration.
Neil deGrasse Tyson