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Combinatorics is the art of counting without counting.

采礦業(yè)的可持續(xù)性不是一種選擇，而是我們未來的必然需求。

I'm very proud to be black, but black is not all I am. That's my cultural historical background, my genetic makeup, but it's not all of who I am nor is it the basis from which I answer every question.

我們都是自己故事中的英雄。

Safest way to get what you want is to deserve what you want.