Human rational inquiry begins from three undeniable observations about reality, and from those observations, four metaphysical positions become possible. Materialism is the first of these, and historically the most consequential.

Senses and intellect

Every philosophical position draws on two faculties: the senses, which give us direct observation of the world, and the intellect, which draws conclusions by reasoning on top of that observation. What separates one position from another is the proportion of trust placed in each. The story of materialism can be read as a shifting relationship between the two, and that shift happens in three stages.

Stage one: early materialism

Materialism's foundational claim is simple: matter is the bedrock of reality, and everything else, life, mind, consciousness, is ultimately derived from it. Early materialism rested on four observations, all drawn from the senses and none seriously questioned:

• Everything we observe consists of matter.
• This matter occupies space.
• Matter is in constant change and movement.
• This movement follows fixed laws, a cause always precedes its effect.

From these observations, early materialists reasoned their way to three further conclusions, not observed but inferred:

1. Matter has always existed. Since time is defined by the movement of matter, there can be no time before matter existed. Admitting "nothingness" felt like a door left open to superstition, so it was rejected outright.
2. Matter will always exist. The same reasoning applied forward as backward: matter changes form but is never destroyed.
3. The movement of matter is purposeless. There is no why, only what. Purpose was treated as a human projection onto an indifferent process.

The distinction matters: the four observations are difficult to deny. The three deductions are where later observation would eventually strike.

Stage two: the scientific revolution

Materialism's most defensible ground turned out to be observation, not deduction, so the program shifted accordingly. Telescopes and microscopes expanded what could be seen, and the new principle became: believe only what can be observed.

This shift shattered several older beliefs. Earth was not the center of the universe. The universe had not simply always existed as it is, cosmic expansion implied a beginning. Humanity was not special or central, dwarfed by the sheer scale of what telescopes revealed. And any claim to inherent purpose in the universe or its laws became unverifiable, and so was dismissed.

In their place, new certainties took shape: the universe as a machine, operating on fixed and discoverable laws, confirmed most powerfully by Newtonian mechanics. Life and consciousness came to be seen as mechanistic outputs of that same lawful, purposeless motion. Free will was denied outright, a machine cannot will anything, and even the felt sense of choosing was treated as itself a product of physical law.

The irony is that this very commitment, trust only what can be observed, would go on to dismantle the certainties it had just built.

Stage three: quantum mechanics and relativity

Observation pushed further still, down into the atom, and what it found there did not confirm the machine-universe. It broke it.

Heisenberg's uncertainty principle showed that at the scale of particles, deterministic laws give way to probability. The machine has no fixed gears at its core. Einstein's relativity showed that space and time are not fixed, objective realities but depend on the observer's velocity and the mass of nearby objects, there is no universal clock, no universal ruler. And at the heart of the atom, physicists found not solid particles but waves, patterns of probability rather than solid stuff.

The deepest irony of materialism's whole trajectory sits here: observation, the very method materialism trusted above all else, led to the discovery that the heart of matter is non-material. The program that began by insisting on the solidity of the physical world ended by dissolving it.

Where materialism stands today

The honest picture is one of real uncertainty at the foundations.

Lost: the eternal, static universe, cosmic expansion and the Big Bang imply a beginning. Matter as solid and fundamental, quantum mechanics revealed its workings as ambiguous and immaterial. Space and time as fixed, universal realities, relativity dissolved both into observer-dependent phenomena. And the confident claim that the universe is purposeless, which can no longer stand on the foundations that originally supported it.

Maintained, though by commitment rather than evidence: that matter has always existed in some form, and that the macro world still follows Newtonian laws reliably enough for everyday science and engineering to keep working.

Unresolved: what matter fundamentally is, how it gains mass, how life first emerged from it, and what deterministic laws, if any, govern the quantum realm. These questions have been delegated to theoretical physics, with no consensus in sight.

Conclusion

For most of its history, materialism's sharpest weapon against religious and metaphysical claims was a picture of a solid, lawful, eternal, purposeless universe. That picture no longer holds, not because of theology, but because of physics. The very method materialism trusted, observation, dismantled its own foundations. It is no longer in a position to dismiss religious claims on the grounds of "solid material reality," because that solidity dissolved under its own instruments.

One thing worth naming directly: many people, including many practicing Muslims, still argue against materialism using the old picture, an eternal, mechanical, purposeless universe. They don't realize that serious materialists have already abandoned those claims. If we want to engage with materialism honestly, we have to engage with where it actually stands now, not where it stood in the nineteenth century.