Always listen to your audience. They will tell you what they want, if you're willing to hear.
永远倾听你的观众。如果你愿意听,他们会告诉你他们想要什么。
在数学中,提出问题的艺术必须比解决问题更有价值。
The only way to discover the limits of the possible is to go beyond them into the impossible.