国君若真的希望人民多而不希望人民减少的话,如果要蓄养姬妾,就不能不节制。
The essence of poverty is that tomorrow’s uncertainties devour today’s possibilities.
"The only thing that is truly boundless is the human spirit."
"Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding."
电的定律如此简单,可以用几行字表达,却又如此多样,其后果永远无法穷尽。