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My favorite things in life don't cost any money. It's really clear that the most precious resource we all have is time.
In mathematics, the journey from confusion to clarity is the most rewarding experience.
The best way to understand markets is to see them as dynamic systems.
每当有人逝去,总有少数的人们会想到:许多事情被忽略了,许多事情还未来得及去做;多少事情给遗忘了,而更多事情已无法弥救——足可见,平素对待周围的人们需用心才是;没有什么是比追悔莫及更令人懊丧的了;请让我们趁早记住这个理吧,以免受那样的痛苦。