The Idiot’s Guide to World Views - Naturalism
For further reading
‘The Silence of Finite Space: Naturalism’, The Universe Next Door, James Sire
‘Pessimistic Existentialism’, Lifeviews, R.C. Sproul
‘Rene Descartes: The Father of Modern Rationalism’, The Consequence of Ideas, R.C. Sproul
‘Naturalism’, W.P. Alston, The New Dictionary of Christian Apologetics, ed G McGrath
‘Naturalism is a metaphysical view that the universe is all that there is, but science by its job description is restricted to exploring the constituents of the physical universe and regular patterns in their behaviour. Because of that restriction, it can have nothing to say about whether there is anything other than that universe’ the IVP Dictionary of Apologetics p479.
Naturalism is the world view that nothing exists except nature. The chief reason for its popularity is the success of natural science from the 17th Century onwards. But, as Alston correctly observes, though science may have contributed to the widespread acceptance of naturalism it cannot coherently account for it.
Six main propositions summarise the naturalistic world view.
1. Only matter exists eternally
The prime proposition in naturalism concerns the nature of the universe. Matter is all that there is. There is nothing else. Consequently, there is no God. Matter must be eternal since ‘nothing comes from nothing’. Matter is something and so, the logic of naturalism goes, this something must have been around forever. But that something is not a transcendent creator, it’s the material of the universe. What naturalism has thought this matter is has evolved over time as science has investigated the natural world. This is still very much a matter for discussion. What naturalists are clear on, however, is that the universe is not composed of mind and matter. It is one thing; matter. And mind or spirit is to be understood as a subset of matter.
2. The universe is a closed system
The universe is a closed system. It’s not open to being reordered by the activity of something outside that closed system. In fact, since there’s no God there’s no possibility of re-ordering from a transcendent being. But also, since the system is closed the system cannot be re-ordered by autonomous human beings. We’re just part of the closed system. Consequently the only explanation for what happens is a naturalistic one. Miracles, for example, cannot be understood as the space time intervention of a transcendent creator. If the system is closed and held together by cause and effect then reality is deterministic and ‘whatever will be, will be’. There’s no possibility of change. But some naturalists want to have their cake and eat it. They argue for a deterministic universe but also argue that this doesn’t remove our responsibility for our actions. This is a point of incoherence that underlies the inherent weakness of this world view.
3. Human beings are complex machines
Descartes held that human beings were part machine and part mind. The mind was a different substance. Subsequent thinkers tinkered with this. And now the vast majority of naturalists see mind as a function of machine. One writer, Pierre Jean Georges Cabanis put it this way, ‘the brain secretes thought as the liver secretes bile’. Nice. Since human beings are part of the universe and in the universe there is only matter then we can only be that. The laws of the universe apply to us. We are therefore only matter. We do not stand outside the universe in any way. Our personality is simply an interrelation of chemical and physical properties that we do not yet fully understand. However, naturalists do acknowledge that within the universe human beings are distinct and unique. In general our uniqueness is observed in our conceptual thought, our employment of speech, cultural sophistication and our moral capacity. These make us valuable. But none of them implies a transcendent power or an extra-material basis.
4. Death is extinction
Since we are nothing more than matter when that matter from which we are made ‘gives up the ghost’, we cease to exist. We only exist whilst our constituent elements are organised in a ‘me’. As the Humanist Manifesto II states, ‘As far as we know, the total personality is a function of the biological organism transacting in a social and cultural context. There is no credible evidence that life survives the death of the body’. Well, apart from the resurrection of Jesus Christ but that’s a point for later! So we’re transitory. We start in oblivion and we end there. Immortality means nothing more than to continue to exist through our offspring and the pervading influence of our lives upon our peers or our culture.
5. History has no overarching purpose
Human history is simply an extension of natural history. One flows out of the other. Natural history begins with the creation of the universe but few naturalists are able to say how it happened. But the presupposition is that the process was self activating. There is no need for a god hypothesis. Whilst naturalists struggle to explain the origin of life they feel more certain on the origin of the species. The theory of neo-Darwinian evolution, brought about by the survival of the fittest through advantageous random mutations, holds sway. The naturalistic interpretation of evolution denies any theistic involvement and teleological goal. The process is entirely materialistic in its origin and operation. G.G. Simpson expresses it this way when he writes, ‘Man arose as a result of the operation of organic evolution and his being and activities are also materialistic, but the human species has properties unique to itself among all forms of life, superadded to the properties unique to life among all forms of matter and of action. Man’s intellectual, social, and spiritual natures are exceptional among animals in degree, but they arose by organic evolution’. We’re just chance accidents. And so our history though it’s a linear series of events linked by cause and effect has no real design, purpose or intended goal.
6. Ethics relates only to human beings
Naturalistic morality is an oxymoron. That’s not to say that naturalists don’t have morality. But that naturalism can provide no grounds for it. It’s parasitical on the theistic account of reality. Naturalists are just living off the residual influence of a once pervasive Christian world view. For a theist, God is the foundation of values. But naturalism killed off God and so values must be manmade. As Sire says, ‘The naturalist’s notion follows logically from the previous proposition. If there was no consciousness prior to humans, then there was no prior sense of right and wrong. Furthermore, if there were no ability to do other than what one does, any sense of right and wrong would have no practical value. So for ethics to be possible, there must be both consciousness and self-determination. In short, there must be personality’ Sire, The Universe Next Door, p71. Naturalists argue that consciousness and self-determination came with the appearance of human beings. That’s when ethics kicked off. But the major issue with this formulation of morality is how on earth this system of thought can justify it. The problem is sometimes formulated like this, ‘How can ought derive from is?’ There’s no rational basis for any ethical obligation within naturalism. Attempts have been made to explain deal with this major flaw. It’s been argued that all people have a sense of moral values derived from intuition, from authority and from convention. There’s something in that because we’re made in the image of God. But naturalists can’t account for it. Naturalist ethicists note that values are not universal. They differ from culture to culture. Apparently this is because what works best in a culture will vary. Whatever promotes harmony is good. Something is deemed unethical if it’s not commonly accepted. And ethics becomes culturally determined. It’s situational. Some attempt to root the ethical cause within the context of neo-Darwinian evolution. Therefore something is deemed ‘good’ if it’s a survival promotion action. But even ‘good’ is a meaningless term in naturalism. The lack of a logical account for morality remains a massive weakness in the naturalistic world view.
Conclusion
And yet, with all its weaknesses, naturalism has proven to be a very persistent world view. There are two dominant reasons for this. First, it gives the impression of being the inevitable consequence of scientific enquiry. It’s based on observable facts not speculative theorising. Secondly, to a vast number of people it appears make logical sense of the world. Therefore it’s very attractive as an explanation of the world as we experience it. But, as I’ve suggested, it’s not without its problems. It’s internally inconsistent. It fails to provide an adequate reason for the uniqueness of human value because everything in nature is, in one sense, unique. It also fails to account for the capacity of human thought. If I’m just a thinking machine and my human consciousness is in no way transcendent from the matter from which I’m constituted how can I trust my thinking? I don’t see how I can.
