“C. S. Lewis powerfully articulates this point: “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. Probably earthly pleasures were never meant to satisfy it, but only arouse it, to suggest the real thing.”