Love, she felt, ought to come all at once, with great thunderclaps and flashes of lightning; it was like a storm bursting upon life from the sky, uprooting it, overwhelming the will, and sweeping the heart into the abyss. It did not occur to her that rain forms puddles on a flat roof when the drainpipes are clogged, and she would have continued to feel secure if she had not suddenly discovered a crack in the wall.