自然系统的当前状态显然是前一时刻的结果，如果我们设想一个智能体在某一瞬间理解了这个宇宙中所有实体的关系，它就能陈述这些实体在过去或未来的任何时间的各自位置、运动和一般效应。
The present state of the system of nature is evidently a resultant 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.
自然喜欢简单。自然不是傻瓜。
真相很少纯粹，也绝不简单。
The more you sweat in practice, the less you bleed in battle.