你付出什么就会得到什么。你投入什么就会从中得到什么。

相关性和因果关系之间的区别在实证工作中是根本性的。

我不在乎被记住是世界上最出名的人。我想被记住是最无所畏惧的人。

Everybody, all politicians on Left and Right, agree that meritocracy is a great thing, and we should all be trying to make our societies really, really meritocratic. In other words -- what is a meritocratic society? A meritocratic society is one in which, if you've got talent and energy and skill, you will get to the top, nothing should hold you back. It's a beautiful idea.

The Vietnamese people deeply love independence, freedom, and peace. But in the face of a threat to their country's independence and freedom, the Vietnamese people would rather sacrifice everything, not afraid to lose their lives, to defend the independence and freedom of their homeland.

解释：不通过学习而能自己知道的，不去请教他人而能自己通晓的，从古到今没有这样的事。