当股票有吸引力时，你就买它们。当然，它们可能会更低。我以12美元买的股票跌到了2美元，但后来涨到了30美元。你只是不知道什么时候能抓住底部。

The best weapon of a dictatorship is secrecy, but the best weapon of a democracy should be the weapon of openness.

The beauty of virology is that viruses teach us the rules of life by breaking them.

A healthy animal is the foundation of a healthy food chain.

没有什么比一个显而易见的事实更具欺骗性。