孔子说:“君子帮助人取得成绩,不促使人陷入失败。小人相反。”
追求数学知识是一场永无止境的冒险。
The challenge of our time is to build an economy that works for everyone, not just the privileged few.
Every great and deep difficulty bears in itself its own solution. It forces us to change our thinking in order to find it.