But during the Great Depression, Fred Allen had the idea of creating a series of complete stories and situations.

VOA: special.2009.03.09

Why not think about creating positive situations ? that will help us lead happier, more moral lives?

为什么不创造积极的环境,让我们获得更快乐更讲道德的生活？

哈佛公开课 - 幸福课课程节选