在数学中,提出问题的艺术必须比解决问题更有价值。
In mathematics, the art of proposing a question must be held of higher value than solving it.
主要的义务规则是那些要求或禁止某些行为的规则。
我曾梦到往日的一个梦。
We are all experiments of nature.
我们关注的不是数字,而是产生数字的那些东西。
Every setback is a setup for a comeback.