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Lust

Lust is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Lust rather than just read about it. In short: Lust is an intense desire for something. Lust can take any form such as the lust for sexual activity (see libido), money, or power; but it can also take such mundane forms as the lust for food (see gluttony; as distinct from the need for food) or the lust for redolence (when one is lusting for a particular smell that brings back memories).

Lust — main illustration
Lust — illustration

Key takeaways

  • Lust belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Lust to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Lust from memory before moving on to harder problems.

Reference excerpt

Lust is an intense desire for something. Lust can take any form such as the lust for sexual activity (see libido), money, or power; but it can also take such mundane forms as the lust for food (see gluttony; as distinct from the need for food) or the lust for redolence (when one is lusting for a particular smell that brings back memories). Lust is similar to, but distinguished from, passion, in that properly ordered passion propels individuals to achieve benevolent goals whilst lust does not.

In religion

Religions tend to draw a distinction between passion and lust by further categorizing lust as an immoral desire and passion as morally accepted. Lust is defined as immoral because its object or action of affection is improperly ordered according to natural law and/or the appetite for the particular object (eg sexual desire) is governing the person's will and intellect rather than the will and intellect governing the appetite for that object. Conversely, passion, regardless of its strength, is maintained to be something God-given and moral, because the purpose, actions and intentions behind it are benevolent and ordered toward creation, while also being governed by the person's intellect and will. A primary school of thought on this is Thomism, which speaks on the intellect, will and appetite, and draws from principles defined by Aristotle. However, the exact definitions assigned to what is morally definite and ordered toward creation depend on the religion. For example, religions based in pantheism and theism will differ on what is moral according to the nature of the "God" acknowledged or worshipped.

Abrahamic religions

Judaism

In Judaism, all evil inclinations and lusts of the flesh are characterized by Yetzer hara (Hebrew, יצר הרע, the evil inclination). Yetzer hara is not a demonic force; rather, it is man's misuse of the things which the physical body needs to survive, and is often contrasted with yetzer hatov (Hebrew, יצר הטוב, the positive desire). Yetzer Hara is often identified with Satan and the angel of death, and there is sometimes a tendency to give a personality and separate activity to the yetzer. For the yetzer, like Satan, misleads man in this world, and testifies against him in the world to come. The yetzer is, however, clearly distinguished from Satan, and on other occasions is made exactly parallel to sin. The Torah is considered the great antidote against this force. Though, like all things which God has made, the yetzer hara (evil inclination) can be manipulated into doing good: for without it, man would never marry, beget a child, build a house, or occupy himself in a trade.

Christianity

New Testament In many translations of the New Testament, the word "lust" translates the Koine Greek word ἐπιθυμέω (epithūméō), particularly in Matthew 5:27-28:

Ye have heard that it was said by them of old time, Thou shalt not commit adultery: But I say unto you, That whosoever looketh on a woman to lust (ἐπιθυμέω) after her hath committed adultery with her already in his heart. In English-speaking countries, the term "lust" is often associated with sexual desire, probably because of this verse. However, just as the English word was originally a general term for 'desire', the Greek word ἐπιθυμέω was also a general term for desire. The LSJ lexicon suggests "set one's heart upon a thing, long for, covet, desire" as glosses for ἐπιθυμέω, which is used in verses that clearly have nothing to do with sexual desire. In the Septuagint, ἐπιθυμέω is the word used in the commandment to not covet:

You shall not covet your neighbour's wife; you shall not covet your neighbour's house or his field or his male slave or his female slave or his ox or his draft animal or any animal of his or whatever belongs to your neighbour. While coveting your neighbour's wife may involve sexual desire, it's unlikely that coveting a neighbour's house or field is sexual in nature. And in most New Testament uses, the same Greek word, ἐπιθυμέω, does not have a clear sexual connotation. For example, from the American Standard Version the same word is used outside of any sexual connotation:

Matthew 13:17: For verily I say unto you, that many prophets and righteous men desired to see the things which ye see, and saw them not; and to hear the things which ye hear, and heard them not. Luke 22:15-16: And he said unto them, With desire I have desired to eat this passover with you before I suffer: for I say unto you, I shall not eat it, until it be fulfilled in the kingdom of God. Acts 20:33: I coveted no man's silver, or gold, or apparel. Ye yourselves know that these hands ministered unto my necessities, and to them that were with me. Luke 15:14-16: And when he had spent all, there arose a mighty famine in that country; and he began to be in want. And he went and joined himself to one of the citizens of that country; and he sent him into his fields to feed swine. And he would fain have filled his belly with the husks that the swine did eat: and no man gave unto him.

… excerpt ends here. Continue reading the full article.

Illustrations

Lust: Detail: Luxuria (Lust), in The Seven Deadly Sins and the Four Last Things, by Hieronymus Bosch
Detail: Luxuria (Lust), in The Seven Deadly Sins and the Four Last Things, by Hieronymus Bosch
Lust illustration
Lust illustration
Lust: A demon satiating his lust in a 13th-century manuscript
A demon satiating his lust in a 13th-century manuscript
Lust: Detail of Lust at the Sankt Bartholomäus church (Reichenthal), Pulpit (1894)
Detail of Lust at the Sankt Bartholomäus church (Reichenthal), Pulpit (1894)

Worked examples

Example 1 — a first encounter with Lust

Start with the simplest possible case. Write down what Lust claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Lust before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Lust ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Lust

In research
Lust appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Lust in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Lust is common in secondary-school and first-year university syllabi. It links to neighbouring topics Emotions, Personal life, Philosophy of sexuality, so understanding it makes those chapters shorter.
In everyday life
Look for Lust outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Lust in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Lust means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Lust out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Lust in simple terms?

Lust is an intense desire for something. Lust can take any form such as the lust for sexual activity (see libido), money, or power; but it can also take such mundane forms as the lust for food (see gluttony; as distinct from the need for food) or the lust for redolence (when one is lusting for a pa…

Why does Lust matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Lust?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Lust.

Tags

  • Emotions
  • Personal life
  • Philosophy of sexuality
  • Seven deadly sins
  • Sexual attraction
  • Sexual emotions

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