  From out of the dark opening of the worn insides of the shoes the toilsome tread of the worker stares forth… The shoes vibrate with the silent call of the earth, its quiet gift of the ripening grain [i.e., “earth” makes “world” possible by inconspicuously giving itself to the world] and the earth’s unexplained self-refusal in the fallow desolation of the wintry field [i.e., it is also constitutive of earth that it resists this world by receding back into itself]. (PLT 33–4/GA5 19)