The bitterest creature under heaven is the wife who discovers that her husband's bravery is only bravado.
The elegance of a mathematical proof is in its simplicity and clarity.
Technology is a way of revealing.
函数是一种对应规则，通过它当给定任何东西（作为参数）时，可以获得另一个东西（该参数的函数值）。
事实是，我们都在内心携带着自己的监狱。
There can be no permanent progress in the battle against hunger until the agencies that fight for increased food production and those that fight for population control unite in a common effort.
The only limit to your success is your own imagination.