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马跑不起来都是因为太瘦;人不能扬眉吐气就是因为贫穷。
The blood in the animal body is impelled in a circle, and is in a state of ceaseless motion.
生命、自由和共同礼仪的最坏敌人是完全的无政府状态;它们的第二坏敌人是完全的权力。
The strength of a response tendency depends on the amount of reinforcement received.