科学是一段旅程,每一步都很重要。
Science is a journey, and every step matters.
Foreign policy should not be confused with missionary work.
在数学研究中,坚持是关键;许多伟大的成果来自于一遍又一遍地从不同角度看待同一个问题。
The only way to have a good day is to start it with a positive attitude.