Never underestimate the power of a well-designed experiment.

The study of psychology is the study of life in action.

Our frustration is greater when we have much and want more than when we have nothing and want some. We are less dissatisfied when we lack many things than when we seem to lack but one thing.

办丧事虽有一定的礼仪,但还是以哀痛为本。

质量从来不是偶然的；它始终是智慧努力的结果。