是故君子自难而易彼,众人自易而难彼。
所以君子严于律己、宽以待人,而平庸的人却宽以待己、严于律人。 
There’s one item of G.I.gear that can be the difference between life and death.
The study of L-functions is a reflection of the unity of mathematical knowledge.
When faced with challenges, focus on solutions rather than problems.
有时候我们对一些事情感到难过,但我们不愿意告诉别人我们为此感到难过。
Better to have, and not need, than to need, and not have.
最好的采石场不仅在地面上留下洞,还在社区中留下价值。