Doubts are the messengers of the Living One to the honest. They are the first knock at our door of things that are not yet, but have to be, understood. . . . Doubts must precede every deeper assurance; for uncertainties are what we first see when we look into a region hitherto unknown, unexplored, unannexed.
you said you were going to kill rukia with your own hands. . . you make me sick. . . show me your bankai and I will crush it. . . I will make me beg for forgiveness on you knees. . . I will never let you say those words to Rukia again. . . ~Ichigo Kurosaki