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每一个优秀的数学家至少是半个哲学家，而每一个优秀的哲学家至少是半个数学家。

We have a responsibility, every one of us. We may think we live a long way from the oceans, but we don't. What we actually do here, has a direct effect on the oceans—and what the oceans do then reflects back on us.

However difficult life may seem, there is always something you can do, and succeed at. It matter that you don’t just give up.

The only way to get rid of a temptation is to yield to it.