Psychology is not just the study of disease,weakness,and damage it also is the study of strength and virtue, Treatment is not just fixing what is wrong; it also is building what is right.

心理学不仅是对疾病，弱点和伤害进行研究,它也研究优点和美德，治疗不只是修复错误;,同时也要塑造正确的东西。

哈佛公开课 - 幸福课课程节选