The state, therefore, has not existed from all eternity. There have been societies that did without it, that had no notion of the state or state power. At a certain stage of economic development, which was necessarily bound up with the split of society into classes, the state became a necessity.

你的能量会吸引你的同类。

译文：一个人值得被传颂称赞，在于他有高尚的品德，不在于他有多高的地位；一个人被众人信服，在于他做事很务实，并不在于他只会夸夸其谈。赏析：生活中，我们欣赏一个人，都是看重对方的人品和素质。而那些狡诈多端，油嘴滑舌之徒，只会让人生厌。

一个极其优秀的人。他没有敌人，而他的朋友也没有一个喜欢他的。

The laser is to attosecond physics what the telescope was to astronomy.