在数学中,提出问题的艺术必须比解决问题更有价值。
The world is full of obvious things which nobody by any chance ever observes.
Your attitude, not your aptitude, will determine your altitude.
每本书都有一个灵魂,是写它的人和读它并梦想它的人的灵魂。
Market changes are always faster than plans; enterprises must have the ability to adapt quickly.