"I had a linguistics professor who said that it's man's ability to use language that makes him the dominant species on the planet.That may be. But I think there's one other thing that separates us from animals. We aren't afraid of vaccuum cleaners."

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[Animals] do not so much act as be put into action, and that objects make an impression on their senses such that it is necessary for them to follow it just as it is necessary for the wheels of a clock to follow the weights and the spring that pulls them.

— Marin Mersenne