“Because of another prophecy,” said Mr Beaver. “Down at Cair Paravel — that’s the castle on the sea coast down at the mouth of this river which ought to be the capital of the whole country if all was as it should be — out of mind that when two Sons of Adam and two Daughters of Eve sit on those four thrones, then it will be the end of not only the White Witch’s reign but her life, and that is why we had to be so cautious as we came along, for if she knew about you four, your lives wouldn’t be worth a shake of my whiskers!”