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The only thing that stands between a man and what he wants from life is often merely the will to try it and the faith to believe that it is possible.

The future of gas lies in its ability to adapt, not just in its current dominance.

數學中真正的挑戰不是解決問題，而是提出正確的問題。

"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."

人與人之間都是相互的。愛別人的人，別人一定也愛他；為別人謀求利益的人，別人也一定為其謀求利益；憎恨別人的人，別人一定也憎恨他；殘害別人的人，別人也會殘害他。