过去是一个不同的国家，他们做事的方式不同。

It is because nations tend to stupidity and baseness that democracy is possible.

获得好想法的方法是获得很多想法，然后扔掉不好的。

Technology has leveled the playing field for individual traders.

True innovation comes from the ultimate pursuit of details.

"We must constantly challenge our assumptions and be willing to change our minds."

自然是用数学语言写的。