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在数学中,提出问题的艺术必须比解决问题更有价值。
In mathematics, the art of proposing a question must be held of higher value than solving it.
你无法取悦所有人,所以不要尝试。
假设生活会非常艰难,然后问自己能否承受。如果答案是肯定的,你就赢了。
The only freedom which deserves the name is that of pursuing our own good in our own way, so long as we do not attempt to deprive others of theirs, or impede their efforts to obtain it.