每一种化合物都必须有确定的组成，这可以用其元素的符号来表示。

When we understand knowledge-based systems, it will be as before -- except our fingertips will have been singed.

Every book is the wreck of a perfect idea.

美团早期Slogan，源自王兴对团队的要求

Quality is not a promise; it is a result.

沉默可以是一种抵抗形式。

我们知识的边界就是我们想象力的前沿。