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。