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真相往往被隱藏，揭開它需要勇氣。

出自《魏源集·都中吟十三首》。洋人的情況、技術(shù)和版圖，我都了解得像萬里大的手掌中玩米和沙子一樣。知己知彼是兵家的策略，一定要知道誰主掌著典屬國的職位。

To create is to live twice.

解析：圣人之道其實每個人心中都具備。

The essence of computational complexity is to understand the limits of what can be computed efficiently.

Man’s main task in life is to give birth to himself, to become what he potentially is. The most important product of his effort is his own personality.