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每一個實驗，即使是失敗的，也會教會你一些有價值的東西。

對人類同胞最大的罪惡不是憎恨，而是冷漠：那是不人道的本質。

An idea that is not dangerous is unworthy of being called an idea at all.

Language is the only homeland.

Anxiety is essential to the human condition. The confrontation with anxiety can relieve us from boredom, sharpen the sensitivity and assure the presence of tension that is necessary to preserve human existence.