合作是科学进步的基础——没有人是独自工作的。
心灵自有其天地，能把天堂变地狱，把地狱变天堂。
The theory of economic development is the study of how the economic system generates the forces which incessantly transform it.
La palabra es el arma más poderosa que tenemos para cambiar el mundo.
The ultimate ground of faith and knowledge is confidence in God.
投资农民教育能带来最高的回报。