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对抗压力最强大的武器是我们能够选择一种思想而非另一种。
The present state of the system of nature is evidently a consequence of what it was in the preceding moment, and if we conceive of an intelligence which at a given instant comprehends all the relations of the entities of this universe, it could state the respective positions, motions, and general effects of all these entities at any time in the past or future.
幸福需要快乐和目标两者兼具——仅靠其中一项是不够的。