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Thought once awakened does not again slumber; unfolds itself into a System of Thought; grows, in man after man, generation after generation, - till its full stature is reached, and such System of Thought can grow no farther, but must give place to another.

思想一旦觉醒就不再沉睡;展开成一个思维系统;这种思想体系只能在一个又一个人、一代又一代的身上生长，直到达到它的高度为止。

— Thomas Carlyle 托马斯·卡莱尔