语言是心灵的声音，而沉默是它的回响。

悲观的人虽生犹死，乐观的人永生不老。

成功的衡量标准不仅是利润，还有我们创造的积极影响。

The teacher's task is not to implant facts but to place the subject to be learned in front of the learner and, through sympathy, emotion, imagination, and patience, to awaken in the learner the restless drive for answers and insights which enlarge the personal life.

我们海洋的健康直接关系到我们星球的健康。