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The improvement of understanding is for two ends: first, our own increase of knowledge; secondly, to enable us to deliver that knowledge to others.

Coal will remain part of the energy mix, but it must be cleaner and more responsible.

書籍是通往其他可能性的窗戶。

Genius is one per cent inspiration, ninety-nine per cent perspiration.

真相往往藏在最簡單的事物中。