“Creatures are not born with desires unless satisfaction for those desires exists. A baby feels hunger: well, there is such a thing as food. A duckling wants to swim: well, there is such a thing as water. Men feel sexual desire: well, there is such a thing as sex. If I find in myself a desire which no experience in this world can satisfy, the most probable explanation is that I was made for another world. If none of my earthly pleasures satisfy it, that does not prove that the universe is a fraud.”
C.S. Lewis quoted by Russ Kosits in Convivium Vol. 2 #11 (December 2013 - January 2014) - Kosits calls it “the ‘argument from desire’ made famous by C.S. Lewis”