Ignorance is the root and stem of all evil.
无知是一切邪恶的根源和树干。
安全不是成本——它是对我们最宝贵资源(人)的投资。
The right of nature...is the liberty each man hath to use his own power as he will himself for the preservation of his own nature.
You don't have to be a mathematician to have a feel for numbers.
Experience is simply the name we give our mistakes.
The only thing you have to fear is fear itself.
最伟大的艺术因思想而喧闹。