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Remembering that I'll be dead soon is the most important tool I've ever encountered to help me make the big choices in life. Because almost everything—all external expectations, all pride, all fear of embarrassment or failure—these things just fall away in the face of death, leaving only what is truly important. Remembering that you are going to die is the best way I know to avoid the trap of thinking you have something to lose. You are already naked. There is no reason not to follow your heart.

The concept of NP-completeness has provided a powerful tool for understanding the complexity of computational problems.

我不去想過去，唯一重要的是未來。

出自北齊·顏之推《顏氏家訓·勉學篇》。秉，持、拿。猶，還。賢乎，勝于。少年時代就好學，就像是早上初升的太陽之光；老來才知道虛心向學，就像是拿著蠟燭走在暗夜中。盡管如此，還是比閉著眼睛什么也看不到要強多了。意在鼓勵人們時刻不忘學習上進，如果錯過學習的最佳時機，努力追補，仍然是精神可嘉的表現。

The greatest legacy we can leave is a healthier planet for future generations.

了解心靈的方法是對其進行逆向工程：弄清楚自然選擇設計它來完成什么任務。