负责任的采矿是为我们运营的社区留下积极的遗产。

Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.

解释：拿着棋子主意不定，就不能战胜对方。

Happiness is not something that happens. It is not the result of good fortune or random chance. It is not something that money can buy or power command. It depends not on what happens outside of you, but on what happens inside of you.

写作是一种社会认可的精神分裂症形式。