A writer is a person who is not satisfied with the world as it is, who wants to change it, to improve it, to make it more beautiful, more just, more livable.

Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.

最好的扶贫计划是一个能提供好工作的增长型经济。

科学不仅是理性的学科，也是浪漫和激情的学科。