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The beauty of mathematics is that it allows us to explore the universe without ever leaving our chairs.
We leave behind something of ourselves wherever we have been.
Sustainability isn't a choice; it's our responsibility to the next generation.
想治理国家,首先要先去治民。治民要先正己,做好治家的工作,把自家子弟教育好了,自己就会以身作则;只有做到先正自己,才能在治民方面起到带头作用。只有先做好自己,才能为别人带好头和榜样;只有先身体力行才能有好作用榜样示范作用。这才是真正有意义的治理国家的好方法。只有先立好自己的身才能对社会起到好的表率作用。