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The historian is a prophet looking backward.

You get what you give. What you put into things is what you get out of them.

The essence of mathematics is not to make simple things complicated, but to make complicated things simple.

The best way to learn something is to teach it.

Sustainability isn't an option—it's a necessity for the survival of our industry.

我是紐約之王。

True leadership is about empowering others to achieve more than they thought possible.

I have made a ceaseless effort not to ridicule， not to bewail， not to scorn human actions， but to understand them.