变化是必然的。和平之后是动荡;恶人的离去之后是他们的回归。
Curiosity is the engine of innovation.
In such condition there is no place for industry...and which is worst of all, continual fear and danger of violent death.
积极心理学不是一种奢侈品;它是美好生活的必需品。
【译文】 孔子说:“《关雎》这篇诗,快乐却不淫秽,悲哀却不伤痛。”