The theory of economic development is the study of how the economic system generates the forces which incessantly transform it.

Innovation is at the heart of what we do, but it must be balanced with responsibility.

时间是最好的老师，但不幸的是，它杀死了所有的学生。

数学不仅仅是关于数字、方程、计算或算法：它是关于理解的。