A Summary of John Finnis’s Theory of Natural Law

So far I have looked at two theories of physical law. Lewis says that physical laws are descriptive statements made humans, whereas Armstrong says that law are relations between Universals, and so exist out there in the real world.

I want to get a similar contrast within legal law. So far we have Kelsen’s theory, where laws are normative statements made by humans. We can contrast this with a theory of natural law. According to natural law, there are laws that exist out there, that are true whether we know them or not.

Natural law has existed as an idea for millennia. I am focussing on the work Natural Law and Natural Rights, a seminal restatement of the doctrine by John Finnis.

In this post I will just summarise Finnis’s theory. I also have some criticisms, and an attempt to combine this theory with Kelsen’s theory.

John Finnis

John Finnis is an Australian legal scholar who grew up in Adelaide before getting a Rhodes scholarship to Oxford. He is currently professor of law at Oxford. Finnis published Natural Law and Natural Rights in 1980, and the book is considered a seminal restatement of the natural law doctrine. Finnis is a practising catholic, and a fair proportion of his work (in NLNR and subsequent articles) deals with the relationship between natural law and Christian/Catholic values.

The Seven Basic Goods

The central object of Finnis’s theory is a set of seven fundamental ‘goods’ for humankind.  These goods are:

  • Life
  • Knowledge (for its own sake)
  • Friendship and Sociability
  • Play (for its own sake)
  • Aesthetic Experience
  • Practical Reasonableness, i.e. the ability to reason correctly about what is best for yourself, and to act on those decisions.
  • Religion i.e. a connection with, and participation with, the orders that transcend individual humanity

The basic goods serve as an explanation of why we do things. Any worthwhile activity is worth doing because it participates in one or more basic goods.

Other positive qualities, like freedom or humility, are merely methods by which we can achieve one or more of the basic goods. Other motivations for action, such as the pursuit of pleasure or material gain, are misguided and motivated by human inclination rather than practical reason.

The Reality of the Basic Goods

The statement ‘these are the seven basic goods’ is just as true as the statement ‘there are infinitely many primes.’ The basic goods exist independent of human thought, and so we can put them in ‘reality’ in the same sense that maths lives in reality. The basic goods, of course, do not have physical form.

Basic Good

Where do these goods come from?

We can distinguish between theoretical reason, which describes what is true, with practical reason, which describes how to act. Theoretical reason has many principles that cannot be proved, such as:

  • the validity of deductive inferences
  • the principle of induction
  • the assumption that experience corresponds to reality
  • the preference for a simple explanation over a complex one

Principles like these cannot be derived from the principles of logic, and can be meaningfully denied. But if you deny a principle like this, you will find it impossible to pursue knowledge and you won’t be able to get anywhere at all. Moreover, you can just see that these principles are true by looking around.

The basic goods are the same. They cannot be derived from God’s law, or logic, or the inclinations of a human brain. But if you deny them, you cannot get anywhere in the realm of practical reason, and you cannot make decisions about what is best for your life. And, just with theoretical principles, it’s obvious that these goods are basic. In this way, the seven basic goods are self-evident.

It is important to make a distinction here. It is not true that everyone is automatically aware of all the principles of theoretical rationality – a toddler may not understand a modus ponens argument. But such principles are known to every educated, mature person. In the same way, Finnis acknowledges that there are people who do not respect the basic goods; it’s just that those people are wrong.

The Nine Requirements of Practical Reason

One of the seven basic goods is practical reason. You participate in this good by making rational decision that maximise your participation in the other goods – by choosing good projects to pursue, by making moral decisions, and so on. In order to correctly participating in practical reason, you need to fulfil nine sub-requirements. These requirements are self-evident in the same way that the basic goods are self-evident. The nine principles are:

  1. You should view your life as a whole, and not live moment to moment
  2. You naturally have to prioritise certain goods over others (e.g. an academic would prioritise knowledge higher than a tradie), but you should always do so with good reason. You should never arbitrarily discount one of the basic goods.
  3. Basic goods apply equally to all people. You can be self-interested to the extent that you are in the best position to look after yourself, but you should always take into account the good of others.
  4. You should make sure that you do not become obsessed with a particular project, and keep the perspective that the project is a participation of a basic good.
  5. You should actually do projects and make an effort to improve – don’t just sit around or repeat old habits
  6. You should calculate and plan your actions so that they are the most efficient (in a utilitarian sense) and do the most good.
  7. You should never commit an act that directly harms a basic good, even if it will indirectly benefit a different basic good. For example, you should not kill even if it will indirectly save more lives later.
  8. You should foster the common good of the community.
  9. You should act according to your conscience and practical reason, not the authority of someone else.

Making Decisions using the Seven Goods and the Nine Requirements

The seven goods and the nine requirements apply equally to everyone. To make specific decisions in your life, you think reasonably, in accordance with the nine requirements, and decide how you will participate in the basic goods.

There is plenty of scope for discretion in this scheme. If you are deciding what to do with your day, you could choose to listen to music, or to go hiking, or to go to a party, or to volunteer for disaster relief. These are all, in principle, valid choices. Some choices are wrong, e.g. murdering someone, or spending all day in an empty room doing nothing, but there are many equally correct choices.

The seven goods are all equally fundamental, and do not exist in a hierarchy. Therefore, although some acts are wrong (because they do not participate in a basic good), there is no single correct act. This is an important distinction between theoretical and practical reason: in theoretical reason, if two statements contradict then at least one of them must be false. In practical reason, there can be two contradictory acts that are both morally correct choices. It is up to a human’s free will to choose which act they will adopt.

In this way, the seven goods and the nine requirements specify the overarching structure and goals, but do not determine the minutiae of day-to-day life, or even big decisions like the choice of career.

The Common Good and the Need for Authority

Humans naturally need to live in groups. This is both required expressly by the basic good of Sociability, and implicitly by all the other goods, because we are most productive when we are working together. Hence, one of the nine requirements of practical reason is ‘Contribute to the common good.’

The common good is the situation where each member of the community can effectively pursue the basic goods for themselves. Like one of the basic goods, the common good is never achieved, it is only participated in.

Authority

To best achieve the common good, certain acts need to be performed by the whole community rather than specific people. Examples are respect for the rules of games, collaboration within knowledge, spirituality within the community, or respect for each other’s lives and safety. Such co

Such community-wide actions require coordination, and coordination requires authority (not necessarily coercive authority). Such coordinating authorities include churches, team captains, university heads of department, and governments.

One of the basic goods is practical reasonableness. It is necessary that every member of a society be able to make decisions for themselves. Authority figures therefore need to compromise between coordinating society effectively, and granting people the ability to pursue their own ends in the manner they choose.

Natural Law

One of the strongest and most effective sources of authority is the law, and therefore, Finnis concludes, law is a morally necessary component of society.

How is the specific content of law morally determined?

Some laws directly serve basic goods (e.g. the law against murder). Most laws however, are not so direct – instead they create a stable society in which people have the freedom and ability to pursue the basic goods. Before, I said that each person is free to choose the specific details of how they achieve the basic goods – in the same way, the authors of the law are free to choose the specifics of the legal system. As long as the legal system is in service to the basic goods and in accordance with practical reason, it is a morally ‘good’ legal system. Of course, some legal systems will be better than others. A society deciding between legal systems is equivalent to an individual deciding between conflicting moral decisions.

What features should a legal system have?

The law should bring specificity, clarity and predictability into human interactions, and so it should obey public and precise rules. These rules should also regulate the creation of new rules. Finnis agrees with Lon Fuller’s eight requirements of ‘the inner morality of law,’ that laws should be:

  1. Prospective, not retroactive
  2. Possible to comply with
  3. Promulgated
  4. Clear
  5. Coherent
  6. Stable enough that people can use the law as a guide
  7. The making of new laws should be guided effectively within the legal system
  8. People who have authority should be
    1. Accountable
    2. Consistent and acting in good faith

(These eight requirements are posed by Finnis, but agree closely with Fuller’s requirements)

The Moral Force of Law

If you accept a legal system, then you have a legal obligation to obey every law However, a legal system, when implemented correctly, is a very important source of guidance for people, and people have a moral obligation to obey the law. The argument runs like this:

  • I ought to pursue the basic goods
  • Society needs to coordinate in order to best achieve the basic goods
  • The law is an effective way of coordinating society this way
    Therefore:
  • I ought to obey the law.

Therefore you have both a legal obligation and a moral obligation to respect and obey the law. The legal obligation is invariant in force – the law just has offences and sanctions; no offence or sanction is legally worse than any other. The moral obligation has different weight depending on the specific offense, because some offences damage the legal system more than others. If a legal obligation is in line with a moral obligation (e.g. ‘Do not murder’) then you also have the non-legal obligation to not perform that act for moral reasons.

In this way, the law is not just a coercive order. Certainly, in an imperfect society, the law needs to be coercive in order to regulate people who behave badly. These bad people follow the law in order to avoid sanctions. But many people follow the law because they believe that following the law is morally correct. In a perfect society, there would be law without sanctions that functioned only to coordinate people.

What about when the law conflicts with morals?

A classic interpretation of natural law is the doctrine of lex injusta non est lex: that morally wrong laws are not laws at all. Finnis first asserts that this is not the primary concern of a theory of natural law – the primary concern is discerning a system of common good, and determing whether/how a legal system can best achieve that. The issue of immoral laws is nonetheless worth discussing, and Finnis does indeed discuss it.

I have already talked about how laws have both moral and legal obligation. Finnis’ explanation of lex injusta non est lex is quite simple: a morally unjust law imposes legal obligation, but no moral obligation. Specifically, if we look at the argument from before:

  • I ought to pursue the basic goods
  • Society needs to coordinate in order to best achieve the basic goods
  • The law is an effective way of coordinating society this way,
    Therefore
  • I ought to obey the law.

If a law is immoral/unjust,  we can reject premise number 3, and so there is no moral obligation to obey the law. We still have the legal obligation that we should obey the law if we want to avoid the sanction. In this sense the law is still legally valid, but it is not morally valid.

There is another consideration that can sometimes provide a moral obligation to obey immoral laws. Imagine that an act X is morally wrong, but is required by law. Since the law has moral force, it is morally important to ensure that the law is stable. Therefore citizens have a moral obligation to perform X for the sake of not undermining the legal system, and legal officials have a moral obligation enforce X for the same reason. This moral obligation will not necessarily trump the moral obligation that X not be performed, but it is possible that it will trump that obligation. In this way, it can sometimes be morally correct to obey the law, even if the law itself is not morally valid.

The Diagram

So where does Finnis’s account of law fit into the diagram? We have already seen that the basic goods and the requirements of practical reason exist in reality. However, the specific laws of a society do not exist in reality – they are not specified by the general nature of the basic goods and requirements. However, the goods and requirements grant laws moral validity, and this validity is objective. If we accept Kelsen’s premise that laws are normative statements (Finnis doesn’t go into this, but it clears things up), then natural laws are a set of correct normative statements. This gives us:

Natural Law

Source: Finnis, J. (2011, first published 1980). Natural law and natural rights. Oxford: Oxford University Press.

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