 Outside music, Misraki was interested in religion, Ufology and extraterrestrial life.Misraki was an early proponent of the ancient astronaut hypothesis.In 1962 Misraki published his book "Les Extraterrestres" in France which was later reprinted in English under the title of "Flying Saucers Through The Ages" in 1965, he first published the book under the pen name of Paul Thomas as he believed that if his real identity was revealed, his reputation as a musician might be damaged; however, he later revealed his identity, and a number of American editions of the book were published under his real name.