想要懂得今天，就必须研究昨天。

The greatest enemy you will ever face is your own human nature—your impatience, your fear, your need for validation.

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.

这个世界上没有任何真正的卓越可以与正确的生活分开。