If I don’t learn to control my appetites, I will end up drunk in a ditch on the side of the road.
If I don’t learn to control my appetites, I will get type two diabetes and probably die of cancer at an early age.
If I don’t learn to control my appetites, eventually my wife will leave me and I will lose my ministry and my kids will grow up damaged and dysfunctional.
All of this (and more) I believe. After all, “… the fruit of the Spirit is … self-control….” (Gal 5:22-3).
But if one wants to control her appetites, then maybe it would be a tad helpful to know what an appetite actually is. (For appetites manifestly are not controlled by “trying harder.”)
Enter Thomas Aquinas, who has some very interesting things to say about appetite and the larger issue of desire.
By the way, as an Anglican priest I’d be remiss not to mention that our Book of Common Prayer is replete with references to desire, not least the Collect for Purity: Almighty God, unto whom all hearts be open, all desires known, and from whom no secretes are hid: cleanse the thoughts of our hearts by the inspiration of thy holy spirit, that we may perfectly love thee, and worthily magnify thy holy name: through Christ our Lord. Amen.
Indeed, desire is what the Christian life is all about. (John Piper gets this right with his “Christian Hedonism,” in my opinion, albeit in a truncated way which leaves much to be desired — no pun intended.)
For example Thomas insists that, though all people do not choose God, all people do nevertheless desire God.
He also teaches that if a thing exists, then it has appetite. So rocks have appetite, as do trees, earthworms, chimps, human beings, angels (what Thomas sometimes, in a more metaphysical mode, calls “intelligences”), even God himself. Appetite is the tendency that a thing has to “complete” itself, to strive for its telos.
For Thomas the appetite, like the external sense organs of eye, ear, nose, etc., are passive. They require an object if they are to be “activated.” But the object required to activate or to “ignite” the appetite is no ordinary object. It is a fusion of various “inputs,” the result of a chain of psychic steps which include sense impression, synthesis by the common sense, and “intention.”
What, you ask, is an “intention?” For Thomas an intention is a kind of psychic apprehension (performed in nonrational animals by natural instinct, and in humans by the evaluative faculty known as the vis cogatitiva) by which an object is imbued with self interest. That is, a lamb grasps by natural instinct that a lion is a threat; a human being (who happens to be an entrepreneur) grasps that a market opportunity will create wealth which will lead to creaturely comfort.
More on appetite forthcoming. For now, if you want to control your appetites, perhaps you should know what they are, and how they work.
For more, see Nicholas Lombardo, The Logic of Desire: Aquinas on Emotion, ch. 1.)