Pope Francis talked about more than rabbits on his flight back from the Philippines. He mentioned Robert Hugh Benson's The Lord of the World in the context of discussing "ideological colonization" when first world countries offer funds to third world countries with strings attached:
There is a book, excuse me but I'll make a commercial, there is a book that maybe is a bit heavy at the beginning because it was written in 1903 in London. It is a book that at that time, the writer had seen this drama of ideological colonization and wrote in that book. It is called "The Lord of the Earth," or "The Lord of the World." One of those. The author is Benson, written in 1903. I advise you to read it. Reading it, you'll understand well what I mean by ideological colonization.
What Pope Francis is referring to is really the claims of secularization to create a perfect society imposed on the world. Pope Francis has referred to Benson's futuristic novel before, as Frances Philips of The Catholic Herald noted in 2014. She then cites Monsignor Robert Barron's analysis on Benson's novel:
Then Joseph Cardinal Ratzinger also urged his listeners at a speech in 1992 to read The Lord of the World in response to then President George H.W. Bush's talk of a "New World Order", saying that Benson's book depicted "a similar unified civilization and its power to destroy the spirit. The anti-Christ is represented as the great carrier of peace in a similar new world order.".