Man was defined as a rational being, as a social animal, an animal that can make tools, or a symbol-making animal.

人类被定义为一种理性的存在，一种群居动物，一种可以制造工具的动物，或者一种制造符号的动物。

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Man is a rational being.

人是有理性的生物。

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As a rational being, each herdsman seeks to maximize his gain.

作为理性人，每一个牧人都期望他的收益最大化。

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Man, by nature is a conscious, rational being.

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It challenges our traditional reliance on a model of human behavior that presupposes a rational person capable of being deterred by the threat of punishment.

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It is the glue that keeps our story unified and creates our sense of being a coherent, rational agent.

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