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Was vernünftig ist, das ist Wirklich; und was wirklich ist,das ist vernünftig.
凡是合乎理性的都是现实的,凡是现实的都是合乎理性的。
生活不是如何在风暴中生存,而是如何在雨中起舞。
In crowds it is stupidity and not mother-wit that is accumulated.
I’m a great believer in solving hard problems by using a checklist. You need to get all the likely and unlikely answers before you; otherwise it’s easy to miss something important.