Rigor in proof is what separates mathematics from all other sciences.
I don’t have time to worry about something as trivial as what I look like.
追求知识是一段永无止境的旅程，每一个发现都为新的问题打开了大门。
内心的平和是最好的财富。
时间的流逝既是祝福也是诅咒。