In the realm of perception, the whole is not only more than but also very different from the sum of its parts.
The Langlands program is a challenge to the boundaries of mathematical knowledge.
农业技术不是趋势，而是未来。
La verdadera madurez comienza cuando aceptamos que nunca terminamos de crecer.
一本好书是最好的朋友，今天如此，永远如此。
Every mental state is a function of some physical state of the brain.