The existence of symmetry laws is in full accordance with our daily experience. The simplest of these symmetries, the isotropy and homogeneity of space, are concepts that date back to the early history of human thought.
The question was heatedly debated of how much Western culture should be brought into China.
In the final analysis, the incident is seen as originating from an emotional expression of the frustration and anger of the proud people of China who had been subject to ever increasing oppression from without and decadent corruption from within.
The law of right-left symmetry was used in classical physics but was not of any great practical importance there. One reason for this derives from the fact that right-left symmetry is a discrete symmetry, unlike rotational symmetry, which is continuous.
The three discrete invariances - reflection invariance, charge conjugation invariance, and time reversal invariance - are connected by an important theorem called the CPT theorem.
In the latter half of the last century the impact of the expanding influence of Western culture and economic system brought about in China a severe conflict.
Science has become something that everybody knows he has to pay attention to, but not everybody is a believer. So I don't think we should equate science with religion. But, that science is progressively playing a more and more important part in the life of every individual is obvious.
A graduate student who is still learning courses is not really taking a maximum advantage of a research university's offerings. He should already be finished with course-taking, as he would then be able to shape his own taste about what is a good subject for research work in the graduate school.
I should like to say that I am as proud of my Chinese heritage and background as I am devoted to modern science, a part of human civilization of Western origin, to which I have dedicated and I shall continue to dedicate my work.
I think in the sciences there is still the general belief that America is still tops. For America to lose that, I think, would be very bad, not just speaking as a scientist myself. I think it would be very bad for the morale of the whole country.
Qinghua was first established as a preparatory school in 1911. In 1928, it became a university. In 1929, my father joined Qinghua as a professor, so that was also the year that I moved to that campus because my father brought the whole family along.
There's a real difference of what one believed was one's chief responsibility between American professors and Chinese professors. This was vividly revealed to me when I compared what I could learn in Chicago and what I could learn in China.
