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Program testing can be used to show the presence of bugs, but never to show their absence!

譯文：清貧的生活，對讀書人來說，就是順境；節儉的日子，對種田人來說，就是豐收的年歲。賞析：讀書要耐得住寂寞。清貧的生活能排除浮華奢糜之事，否則只會擾亂身心與學業。節儉是良好的美德，也是人類生存之需要。如果平常儉約，有所積蓄，即使是收成很差，也能豐衣足食。假如不懂得節儉，泿費糧食，即使年年豐收，也會缺衣少食。

水太清澈就不會有魚，人脾氣太急就不會有智謀。

Color is my day-long obsession, joy and torment.

The end of history will be a very sad time. The struggle for recognition, the willingness to risk one's life for a purely abstract goal, the worldwide ideological struggle that called forth daring, courage, imagination, and idealism, will be replaced by economic calculation, the endless solving of technical problems, environmental concerns, and the satisfaction of sophisticated consumer demands.

The universe is a vast and mysterious place, and we are only beginning to understand its complexities.

Collaboration is key. No single company can solve the industry’s challenges alone.