  He turned
and said--

Sir Thomas, arrest this--No, hold!  His face lighted, and he
confronted the ragged candidate with this question--

Where lieth the Great Seal?  Answer me this truly, and the riddle is
unriddled; for only he that was Prince of Wales _can_ so answer! On so
trivial a thing hang a throne and a dynasty!

It was a lucky thought, a happy thought.