爱默生Ralph Waldo Emerson著 爱默生(Ralph Waldo Emerson)著 (美)爱默生(Ralph Waldo Emerson)著 Ralph Waldo Emerson (美)爱默生(Ralph Waldo Emersom)著 (美)R.W. 爱默生(Ralph Waldo Emerson)等著 (美)拉尔夫·瓦尔多·爱默生(Ralph Waldo Emerson)著