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.

购买工具。从购买你能找到的最便宜的工具开始。升级你经常使用的工具。如果你在某项工作中最终选择使用了某种工具，就买你能负担得起的最好的。

成功不在于目的地，而在于旅程和你在路上遇到的人。

每一句话都是一次信仰的飞跃。

自守形式理论是现代数论的核心课题。

The best thing to hold onto in life is each other.