爱默生(Ralph Waldo Emerson)著 (美)爱默生(Ralph Waldo Emerson)著 Ralph Waldo Emerson: Lecture Memoir of Ralph Waldo Emerson Ralph Waldo (美)拉尔夫·沃尔多·爱默生(Ralph Waldo Emerson)著 (美)拉尔夫·瓦尔多·爱默生(Ralph Waldo Emerson)著 The portable Emerson