15. But England possessed two elements of strength--her people, although differing in creed and often warring with one another, were intensely patriotic, and were united as one man against a foreign foe; and the ships of England, manned by English crews and commanded by her great captains--the legitimate successors of the old Vikings--dominated the seas. No enterprise was too hazardous for these hardy mariners to undertake, and no disparity of force ever induced them to pause. Philip was often wrought to frenzy as he saw these bold corsairs capture his treasure-ships and ravage his coasts in sight of his invincible but impotent armies.