教育的根是苦的，但果实是甜的。

There are some secrets which do not permit themselves to be told.

企业的角色是生产能够改善人们生活的产品和服务，同时使用更少的资源，并且要合法行事、保持诚信。

To reconnect with nature is key if we want to save the natural world.

The interplay between discrete and continuous mathematics is where some of the most interesting problems lie.

你周围被你称为生活的一切，都是由不比你我聪明的人创造的。