For one thing, the man’s origin was lower, from the dust; the woman begins from already living flesh and, moreover, from flesh taken close to the heart. Also, the man is, in the process, rendered less than hole; he suffers a permanent but invisible wound, signifying a deep and probably unfulfillable desire. Because he is incomplete and knows it, the man will always be looking for something he lacks; but as the image of a lost rib suggests, the man cannot really know what is missing or what the sought-for wholeness would really be. Male erotic desire is a conundrum: it wants and wants ardently, but it is unsure of what exactly would fully satisfy it.
Leon Kass – The Beginning of Wisdom p.101