by Ralph Waldo Emerson. by Ralph Waldo and Emerson. Ralph Waldo Emerson. Ralph waldo Emerson Ralph Waldo Emerson / Ralph Waldo Emerson : 爱默生(Ralph Waldo Emerson)著 Essays by Ralph Waldo Emerson The works of Ralph Waldo Emerson. (美)爱默生(Ralph Waldo Emerson)著