弦理论是二十一世纪物理学的一部分,偶然落入了二十世纪。
The advantages found in history seem to be of three kinds, as they result either from the mere situation of the climate and country or from the form of government and of the character of the people, or from those finer principles and morals, which may be called the recommendations of philosophy.
我不是英雄,我是反派。