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"Complexity theory teaches us that not all problems are created equal; some are inherently harder than others."
保全你的身形,养护你的生命,不要思虑重重、汲汲营营。
Fearless is not the absence of fear. It's not being completely unafraid. It's having a lot of fears, but jumping anyway.
The greatest problem for mathematicians now is probably the Riemann Hypothesis.
天下英雄谁能匹敌?唯有曹操刘备。生儿子就应当像孙权那样。
二十年的爱情让女人犹如一片断痕残壁,但二十年的婚姻则让她好似一栋公共建筑。