The most important principle of positive psychology is that other people matter.
积极心理学最重要的原则是:他人很重要。
Books make great gifts because they have whole worlds inside of them.
解析:修行在于减少私欲。
如果没有冬天的寒冷来赋予它甜蜜,夏天的温暖又有什么意义呢?
起初一无所有,然后发生了爆炸。