Julius Caesar heard that a little way off there was a country nobody knew anything about, except that the people were very fierce and savage, and that a sort of pearl was found in the shells of mussels which lived in the rivers. He could not bear that there should be any place that his own people, the Romans, did not know and subdue. So he commanded the ships to be prepared, and he and his soldiers embarked, watching the white cliffs in the other side of the sea grow higher and higher as he came nearer and nearer.