Civilization will not last, freedom will not survive, peace will not be kept, unless a very large majority of the people unite to defend them.
天下不能由一个人治理,就设置官员来治理。
一个人的幼儿时期,其实就是一种不断习得能力的过程,这个周期性的刺激,将带给儿童无限的欢乐和乐趣。
In the state of nature, profit is the measure of right.