A tannery's wastewater is the truest measure of its values.

Mathematics is the poetry of logical ideas.

远水救火是难办到的，再好的亲戚也不如近处的邻居。

I think the most important thing is to be honest with yourself and with others.

只有当人能够察看自己的内心深处时，他的视野才会变得清晰起来。向外看的人是在梦中、向内看的人是清醒的人。