The development of computational complexity theory has shown us that not all problems are created equal.
The only thing that you absolutely have to know is the location of the library.
The world is the totality of facts, not of things.
月初看了盖叫天口述、由别人笔录的《粉墨春秋》,倒是解放以来谈艺术最好的书。人生—教育—伦理—艺术,再没有结合得更完满的了。从头至尾都有实例,决不是枯燥的理论。关于学习,他提出“慢就是快”,说明根基不打好,一切都筑在沙上,永久爬不上去。我觉得这一点特别值得我们深思。倘若一开始就猛冲,只求速成,临了非但一无结果,还造成不踏实的坏风气。德国人要不在整个十九世纪的前半期埋头苦干,在每一项学问中用死功夫,哪会在十九世纪末一直到今天,能在科学、考据、文学各方面放异彩?盖叫天对艺术更有深刻的体会。他说学戏必须经过一番“默”的功夫。学会了唱、念、做,不算数;还得坐下来叫自己“魂灵出窍”,就是自己分身出去,把一出戏默默的做一遍、唱一遍;同时自己细细观察,有什么缺点该怎样改,然后站起身来再做、再唱、再念。那时定会发觉刚才思想上修整很好的东西又跑了,做起来同想的完全走了样。那就得再练,再下苦功,再“默”,再做。如此反复做去,一出戏才算真正学会了,拿稳了。你看,这段话说得多透彻,把自我批评贯彻得多好!老艺人的自我批评决不放在嘴边,而是在业务中不断实践。其次,经过一再“默”练,作品必然深深的打进我们心里,与我们的思想感情完全化为一片。
One of the best rules anybody can learn about investing is to do nothing, absolutely nothing, unless there is something to do... I just wait until there is money lying in the corner, and all I have to do is go over there and pick it up.
资本资产定价模型(CAPM)是理解风险-回报权衡的有用工具,但它并非对现实的完美描述。
If you're not failing occasionally, you're not pushing hard enough.