1．私心人皆有之。
2．自私的根源是什么：给社会和个人带来怎样的后果?
3．为自己活着没有任何意义。
frankly speaking, selfishness is not a strange thing to all of us. it's human nature to be selfish. a selfish person puts his oed by society. selfish ness e from? there is no trouble anspletely alone? let's devote our love to each other and be considerate toe a beautiful place. selfishness should be done away with.