Scientism is what we call the belief that natural science is the only valid method for acquiring truth and knowledge. It goes beyond a respect for the empirical evidence that helps us understand the physical universe, and claims that science alone can address all meaningful questions about reality - including ethics, meaning, and metaphysics.
Scientism dismisses philosophy, theology, and the arts as inferior or incapable of producing true knowledge. Complex human experiences and moral judgments are reduced to purely scientific, material explanations.
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Can Science Explain Everything? | John Lennox Responds to Dawkins & Hawking
Prof John Lennox on whether the physical sciences can carry every question we want to ask of reality.
Catholic Priest: Can Science be Trusted?
Fr Casey Cole on what trusting science means, and how far that trust can reasonably go.
What scientism does well
Data over instinct
It champions objective data and logic, actively discouraging the cognitive biases that shape what we would otherwise be inclined to believe.Experiments anyone can repeat
Replicable experimentation gives a framework for problem-solving that transcends cultural, political, and linguistic boundaries.It can be proven wrong
Unlike subjective belief systems, it relies on theories that must be tested and can be proven wrong, so that our understanding of the universe is constantly refined as new data emerges.
Where scientism falls down
Philosophers have argued that the concept of scientism is inherently self- refuting (since the assertion "science is the only way to find truth" cannot be proven scientifically). But beyond this, the primary negatives of this worldview include the undermining of the qualitative human experiences (like art, love, and morality), the undervaluing of non- scientific disciplines, and the flawed assumption that the scientific method will always be self-correcting and will always lead us to objective and value-neutral truths. There are four main problems:
It cannot prove itself
Philosophers have argued that the position is inherently self-refuting, since the assertion that science is the only way to find truth cannot itself be proven scientifically.It cannot reach the human experience
Science is excellent at measuring the physical world, but it cannot objectively measure or define human emotions, values, morality, aesthetics, or purpose. By insisting that these aspects of life are secondary or illusory because they aren't empirically measurable, scientism severely limits our understanding of what it means to be human.It discards whole disciplines
Because it elevates science to be the sole arbiter of truth, it tends to devalue the humanities, philosophy, history, and the arts. This can lead to an intellectual environment where disciplines that focus on meaning-making, critical thinking, and ethics are discarded as “useless” or non-factual.It treats science as infallible
It has a tendency toignore the inherent fallibility and limitations of the scientific process itself, assuming that science is completely value-neutral and conflating current provisional models with final, absolute truth. Issues with reproducibility and publication bias - where studies are not published if they conflict with prevailing views - frequently plague empirical studies, making scientific findings less absolute than scientism implies. Scientism focuses on how things can be described in a measurable sense, but it has little to say about how things should be. This is problematic when applied to logic (the systematic study of the principles of correct reasoning). Logic is about how we should think, not just about how our brains are wired
The Catholic view
Science can tell us how things happen, but it cannot intrinsically tell us what we ought to do with that information. Believing that science alone can dictate moral or ethical behaviour - a core component of strong scientism - ignores the vast and necessary fields of ethical philosophy, and of what it means to be human. By claiming that only the physical exists, scientism undermines or eliminates concepts central to human experience: free will, morality, purpose, and the soul.
The Church argues that the historical roots of science, including modern formulations like the Big Bang theory, were established precisely because Christian theology teaches that the universe was created by an intelligent Lawgiver.
Two books
Rather than opposing science, the Church maintains a “Two Books” approach: the Book of Nature and the Book of Scripture. Pope St. John Paul II’s phrase is the summary of it - truth cannot contradict truth. Science finds the truth in the physical world, but theology and philosophy use reason to explore spiritual and moral truths. Science is not the only valid way to encounter reality.
The Book of Nature
Science investigates the physical world, and the empirical method is excellent at measuring it.The Book of Scripture
Theology and philosophy rely on reason and revelation to explore spiritual and moral truths.