社会系统是个人与个人之间、群体与群体之间关系的网络。
名声不是生活中最重要的东西,最重要的是快乐。
Life is too short to waste time hating anyone.
There is no stress in the world, only people thinking stressful thoughts.
Men and women differ in their reproductive strategies because they have faced different adaptive problems throughout evolutionary history.