The 40% solution: The capacity to increase happiness is within our personal control.
The most powerful thing you can be is yourself.
最优秀的采石场不仅提取价值,更通过再生创造价值。
世界称之为不道德的书籍,恰恰是揭露了世界自身羞耻的书籍。
如果一个社会中的大部分成员贫穷而悲惨,那么这个社会就谈不上繁荣幸福。
I have always preferred working on concrete problems rather than abstract theories.