Language is a process of free creation; its laws and principles are fixed, but the manner in which the principles of generation are used is free and infinitely varied.
语言是一种自由创造的过程；其法则和原则是固定的，但生成原则的使用方式是自由且无限多样的。
数学中最重要的是理解概念，而不仅仅是记忆公式。
我们关注的不是数字，而是产生数字的那些东西。
The tragedy of great power politics is that even well-intentioned states are forced to act in ways that can lead to conflict and war.
I am convinced that the substitution of a simple tax on the rent of land for the complicated taxes which at present oppress industry would be advantageous to all classes.