儿童不是缩小的成人，而是有其自身发展规律的个体。

The greatest weapon against stress is our ability to choose one thought over another.

Three things are necessary for the salvation of man: to know what he ought to believe； to know what he ought to desire； and to know what he ought to do.

在感知领域，整体不仅大于其部分之和，而且与其部分之和非常不同。