Man is but mortal: and there is a point beyond which human courage cannot extend. Mr. Pickwick gazed through his spectacles for an instant on the advancing mass, and then fairly turned his back and-we will not say fled; firstly, because it is an ignoble term, and, secondly, because Mr. Pickwick's figure was by no means adapted for that mode of retreat-he trotted away, at as quick a rate as his legs would convey him;.