--- slug: lorenz-phantasia-047ceb78 title: "Lorenz on Phantasia" author: "Hendrik Lorenz" work: "The Brute Within: Appetitive Desire in Plato and Aristotle" section: "" year: "2006" tradition: classical themes: - phantasia fragment: | But not all desires-not even all human desires-are, on Aristotle's view, desires of this kind. His theory of motivation allows for desires which arise inde-pendently of one's thoughts about what it is best to do. Appetitive desires (Rπιθυµgαι) are the clearest case in point. These are desires for pleasure, or (better) desires for something or other as pleasant. They flow simply from beliefs or repre-sentations to the effect that something or other is a source of pleasure. They can, Aristotle thinks, motivate us to act not only independently of, but even against, our deliberations about what it is best to do. lead_in: "" reflection: | Aristotle is doing something quietly radical here. The epithumiai — appetitive desires, desires for the pleasant — operate by their own momentum, upstream of your reasoned judgment about what would be best. They do not wait for you to finish deliberating. They can move you against the conclusion you have already reached. This cuts against a story the tradition has been telling since at least the Stoics: that desire, properly understood, reduces to belief, and that correcting the belief corrects the want. If you really knew what was good, you would want it. If you still want the wrong thing, the knowing hasn't gone deep enough yet. The therapeutic hope hidden in that story is considerable — it implies that understanding is curative, that enough insight will finally close the gap between what you know and what you reach for. Aristotle declines this comfort. The epithumiai flow from representations of the pleasant, not from evaluations of the good, and representations of the pleasant are not dislodged by arguments about the good. The man who knows perfectly well that the drink will ruin his morning still wants the drink — not because his knowledge is defective, but because the desiring faculty takes its instruction from a different source entirely. Akrasia is not an epistemic failure you can think your way out of. It is a structural feature of the soul. reflection_v0_3: | The unstated assumption worth pausing on is that "beliefs or representations" about pleasure are already enough — that no further endorsement by reason is required for a desire to get traction on the will. Aristotle is quietly parting ways with any picture in which beliefs are inert until ratified by judgment. What follows from this is not merely a taxonomy of desire types but a different theory of the self: one in which there are, so to speak, multiple voting blocs, and the deliberative voice is only one of them. Plato knew this too, of course, but tended to treat appetitive rebellion as a failure of governance — the charioteer losing the reins. Aristotle's framing is more structural: the appetite was never under full jurisdiction to begin with. The sobering thought is that knowing what is best and wanting accordingly are two different achievements, and the second does not automatically follow from the first. parent_id: Lorenz_2006_The_Brute_Within_Appetitive_Desire__par0055 source: oracle-v3-retrieve generated: 2026-04-17 regenerated: 2026-04-18 prompt_version: v2.7 status: draft --- Lorenz writes: > But not all desires-not even all human desires-are, on Aristotle's view, desires of this kind. His theory of motivation allows for desires which arise inde-pendently of one's thoughts about what it is best to do. Appetitive desires (Rπιθυµgαι) are the clearest case in point. These are desires for pleasure, or (better) desires for something or other as pleasant. They flow simply from beliefs or repre-sentations to the effect that something or other is a source of pleasure. They can, Aristotle thinks, motivate us to act not only independently of, but even against, our deliberations about what it is best to do. — Hendrik Lorenz Aristotle is doing something quietly radical here. The epithumiai — appetitive desires, desires for the pleasant — operate by their own momentum, upstream of your reasoned judgment about what would be best. They do not wait for you to finish deliberating. They can move you against the conclusion you have already reached. This cuts against a story the tradition has been telling since at least the Stoics: that desire, properly understood, reduces to belief, and that correcting the belief corrects the want. If you really knew what was good, you would want it. If you still want the wrong thing, the knowing hasn't gone deep enough yet. The therapeutic hope hidden in that story is considerable — it implies that understanding is curative, that enough insight will finally close the gap between what you know and what you reach for. Aristotle declines this comfort. The epithumiai flow from representations of the pleasant, not from evaluations of the good, and representations of the pleasant are not dislodged by arguments about the good. The man who knows perfectly well that the drink will ruin his morning still wants the drink — not because his knowledge is defective, but because the desiring faculty takes its instruction from a different source entirely. Akrasia is not an epistemic failure you can think your way out of. It is a structural feature of the soul. --- Hendrik Lorenz · *The Brute Within: Appetitive Desire in Plato and Aristotle* · 2006