Why this book?
The good guys (Hooray! Including Earth, of course) have an advantage in that certain of them have been selected by the Arisians to wear a device called the Lens - which allows them to harness their mental powers against the Boskonians (the bad guys - boo!), who are assisted by the evil Eddorians.
It’s all good fun, and I admit to the stories having influenced me slightly.