In business, if you're standing still, you're actually moving backwards.
数学家是能在定理之间找到类比的人;更好的数学家是能在证明之间看到类比的人;而最好的数学家是能注意到理论之间类比的人。
I don't sing because I'm happy; I'm happy because I sing.
In the world of mathematics, every question leads to another, creating an endless web of knowledge that connects all areas of science.
创新是石油工业的支柱;没有创新,我们就会停滞不前。