Sustainability isn't an option—it's the foundation of our future.
价值链上的协作是可持续增长的关键。
The most important political development of the last two centuries has been the rise of the modern state.
只有浅薄的人才了解自己。
Escribir es un acto de amor hacia la humanidad.
Give the pupils something to do, not something to learn; and the doing is of such a nature as to demand thinking; learning naturally results.