—WilliamButlerYeats——威廉·巴特勒·叶芝Whenyouareoldandgreyandfullofsleep；当你老了，头发花白，睡意沉沉。Andnoddingbythefire。takedownthisbook,倦坐在炉边。取下这本书来，Andslowlyread,anddreamofthesof...