This quite settled it.

The olive prince was crazy.

Did not St.George remember the old man in the frayed neckerchief and bagging pockets who had brought to the office of the _Sentinel_ chart after chart about perpetual motion, until St.George and Amory had one day told him gravely that they had a machine inside the office then that could make more things go for ever than he had ever dreamed of, though they had _not_ said that the machine was named Chillingworth.
"You have knowledge of both these things ?" asked St.George indulgently.
"Yaque understood both those laws," said the prince quietly, "when William the Conqueror came to England." He hesitated for a moment and then, regardless of another soft explosion from Mr.Frothingham's lips, he added: "Do you not see?
Will you not understand?
It is our knowledge of the Fourth Dimension which has enabled us to keep our island a secret." St.George suddenly thrilled from head to foot.

What if he were speaking the truth?
What if this man were speaking the truth?
"Moreover," resumed the prince, "there were those among us who had long believed that new strength would come to my people by the introduction of an inhabitant of one of the continents.

His coming would, however, necessitate his sovereignty among us, in fulfilment of an ancient Phoenician law, providing that the state, and every satrapy therein, shall receive no service, either of blood or of bond, nor enter into the marriage contract with an alien; from which law only the royal house is exempt.