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Definitions belong to the definers, not the defined.
Everyone thinks of changing the world, but no one thinks of changing himself.
你唯一应该回头看的时候是看你已经走了多远。
The discovery of topological insulators has opened up a new frontier in condensed matter physics, where the interplay between topology and symmetry leads to novel quantum states of matter.
我们今天所做的每一个决定都为明天的森林播下种子。