"Papa, what sort of language did these Star-beings talk?"
"A very simple language, but the humans were never able to master it. So, the invaders, being so much smarter, mastered all the languages of the globe."
"What did the Earth-lings call the invaders, father?"
"'An-vils'. Half angels, half devils."
"Then, papa, everything was peaceful on Earth after the An-vils enslaved the humans?"
"For a little while. Then, some of the most daring of the humans, led by a man named Knowall, escaped into the interior of Greenland. This Knowall was a psychiatrist, the foremost on Earth."
"What's a psychiatrist?"
"A dealer in ideas."
"Then, he was very rich?"