译文：人生的处境变化无常，我们一定要谋划未来，学习安身立命的本领；人生的光阴容易逝去，我们应该尽早谋划人生，确立目标并付诸行动。赏析：生命有限，时光短暂，我们应早日树立人生目标，学得一技之长，方能立于不败之地。

Cryptography is the art of transforming information into a form that is unintelligible to anyone who does not possess the key to unlock it.

风险管理不是规避风险，而是理解并减轻风险。

Writing is about making something seem real, not about making it real.

The meaning of a word is its use in the language.

专家就是在一个非常狭窄的领域里犯了所有可能犯的错误的人。