by Ralph Waldo Emerson. Ralph Waldo Emerson 爱默生Ralph Waldo Emerson Kerr, Ralph Waldo Emerson, The works of Ralph Waldo Emerson. (美)爱默生(Ralph Waldo Emerson)著 (美)爱默生(Ralph Waldo Emerson)[著 [(美)爱默生(Ralph Waldo Emerson)著 (美)爱默生(Ralph Waldo Emerson)[著] (美)爱默生(Ralph Waldo Emerson【)著】