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The past history of our globe must be explained by what can be seen to be happening now. No powers are to be employed that are not natural to the globe, no action to be admitted except those of which we know the principle.
我们地球过去的历史必须用现在正在发生的事情来解释。任何权力的使用都是全球的自然现象，任何行动都是不可接受的，除非我们知道其中的原则。