Contradiction

Yes, here were a set of sea-dogs, many of whom without the slightest bashfulness had boarded great whales on the high seas—entire strangers to them—and duelled them dead without winking; and yet, here they sat at a social breakfast table—all of the same calling, all of kindred tastes—looking round as sheepishly at each other as though they had never been out of sight of some sheepfold among the Green Mountains. A curious sight; these bashful bears, these timid warrior whalemen!

(Stubb and Flask mounted on them, and passing additional lashings over the anchors there hanging.)

“No, Stubb; you may pound that knot there as much as you please, but you will never pound into me what you were just now saying. And how long ago is it since you said the very contrary? Didn’t you once say that whatever ship Ahab sails in, that ship should pay something extra on its insurance policy, just as though it were loaded with powder barrels aft and boxes of lucifers forward? Stop, now; didn’t you say so?”