人一生不学习，一天闲过，一事无成，这是人生三件可惜事。

Sustainability is not an option; it's a necessity for the future of our planet.

Learning is any change in a system that produces a more or less permanent change in its capacity for adapting to its environment.

勇气是压力下的优雅。

杰出成就的秘诀不是天赋，而是被称为坚毅的激情与坚持的特殊结合。