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Darkness cannot drive out darkness: only light can do that. Hate cannot drive out hate: only love can do that.

Art is not about creating beautiful objects, it's about asking questions and making people think.

To be natural is such a very difficult pose to keep.

數學之美在于它能夠將復雜的事物簡化。

你穿過的門原來是什么樣子，走過去以后也要保持那個樣子。

Every book is a journey, and every journey changes you a little.