La literatura es un espejo que refleja la sociedad en la que vivimos.
Hard to live or die hard.
The true spirit of delight, the exaltation, the sense of being more than Man, which is the touchstone of the highest excellence, is to be found in mathematics as surely as in poetry.
合作是应对全球能源挑战的关键。
The beauty of mathematics only shows itself to more patient followers.
