I think the most important thing in life is to be true to yourself.

书是作者与读者之间的对话。

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.

Truth, like gold, is to be obtained not by its growth, but by washing away from it all that is not gold.