增长来自于冒险，但必须是经过计算的冒险。

爱国是恶人的美德。

"The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all. And that, of course, causes great confusion."

The relationship between education and earnings is complex and varies across different contexts.

The history of all hitherto existing society is the history of class struggles.