To speak ill of others is a dishonest way of praising ourselves.
The act of writing is an act of resistance against forgetting.
登山不论遇到什么艰难险阻都不停止脚步,就一定能够登上山顶。
我不考虑年龄。那些告诉我我太老了不能做某事的人,我只是忽略他们。
Every mathematical problem is a puzzle waiting to be solved, and every solution is a step towards greater understanding.
Doubt is not a pleasant condition, but certainty is an absurd one.