He doesn’t want to be noticed so he tries to hide from his mistake ["But the knock came again My window was wide; I climbed on the sill And descended outside]. It was like he didn’t want to come face to face with what was after him and he’s waiting out on the window sill- hiding from it , ["Back over the sill I bade a "Come In" To whoever the knock At the door may have been."] And he hides from the world, while he’ll burden his fear forever as he continues to age, ["To hide in the world And alter with age."]
