Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
Every hide carries two histories: the animal's life and the tanner's legacy. We're responsible for both.
Happiness is a state of mind. It's just according to the way you look at things.
The beauty of mathematics lies not only in its ability to describe the world but also in its power to reveal the hidden structures that govern it.
任何一个保持爱美之心的人都不会变老。