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人是生而自由的,但却无往不在枷锁之中。自以为是其他一切的主人的人,反而比其他一切更是奴隶。
The process of discovery in mathematics is often more important than the result itself.
The highest manifestation of life consists in this: that a being governs its own actions. A thing which is always subject to the direction of another is somewhat of a dead thing.