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The man who is fit to work at any particular trade is unable to understand the science of that trade without the kindly help and cooperation of men of a totally different type of education.

Sustainability isn't an option—it's our responsibility to future generations.

"Experience is simply the name we give our mistakes."

閱讀是不動的旅行，寫作是不旅行的移動。

宇宙不僅比我們想象的更奇怪，而且比我們能夠想象的更奇怪。