抑制和引导本能冲动，使其可用于更高的文化活动，是文明的基本力量。

Some people are extraordinarily good at knowing the limits of their knowledge because they have to be.

The quality of institutions is the key determinant of a country's success or failure.

Will you be a cynic， or will you be a builder？

Critical comments by students should be taken in a friendly spirit， accumulation of material should not stifle the student’s independence.

我认为生活中最重要的事情是做你自己，做真实的自己。