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Cryptography is about communication in the presence of adversaries.

《詩經》三百篇，其內容可以用一句話概括：“思想純正，沒有邪惡。”

"The world is a tragedy to those who feel, but a comedy to those who think."

Two roads diverged in a wood, and I—I took the one less traveled by, And that has made all the difference.

故事是一種不離家就能探索世界的方式。