Every failure in the lab teaches you something valuable—if you're paying attention.

Safety is the lifeline of the petroleum industry; it must never be neglected.

语言是理解高级心理过程的关键。

《在北京五族共和合进会与西北协进会的演说》，1912年9月3日。

过去是一个异国他乡；他们在那里行事不同。