Teachers are the most important role models in schools, the most instructive examples, and the most vivid examples for students.
The natural and moral world is the two-fold object of man's rational care.
When a professor insists computer science is X but not Y, have compassion for his graduate students.
当教授坚持说计算机科学是X但不是Y时，请对他的研究生抱有同情心。
Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.
The danger is not that we will be deprived of speech， but that we will have nothing worth saying.
The quality of your life is determined by the quality of your relationships.
