Making something variable is easy. Controlling duration of constancy is the trick.

阅读是不动身旅行。

I tend to like things that already exist.

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.

没有人可以赋予自己剥夺自己生命或生命的一部分的自由。

解读：靠炫耀、攀比获得的虚荣感，依赖外界认可，根基不稳，一旦外界夸赞消失，内心只剩空虚失落，劝诫远离虚荣，追求真实价值。