John Donne - "Oh, to vex me, contraries meet in one" lyrics

Oh, to vex me, contraries meet in one: Inconstancy unnaturally hath begot A constant habit; that when I would not I change in vows, and in devotion. As humorous is my contrition As my profane love, and as soon forgot: As riddlingly distempered, cold and hot, As praying, as mute; as infinite, as none. I durst not view heaven yesterday; and today In prayers and flattering speeches I court God: Tomorrow I quake with true fear of his rod. So my devout fits come and go away Like a fantastic ague; save that here Those are my best days, when I shake with fear.