Al Ghazali · Theology

Does Fire Burn?

Al-Ghazali’s startling argument that fire does not really cause cotton to burn - that what we call cause and effect is only God’s habit, anticipating Hume by seven centuries.

From the lesson

Hold a flame to a piece of cotton and the cotton burns. Nothing could seem more obvious than that the fire causes the burning. Yet al-Ghazali, in one of the most startling arguments in the history of thought, denied it. The fire does not, strictly, cause the cotton to burn at all. What we observe, he insisted, is only that the burning happens when the fire is present - two events occurring together. We never actually see a necessary power in the fire forcing the cotton to burn. We see only the conjunction.

So what really makes the cotton burn? Al-Ghazali’s answer is occasionalism: the true and only cause of everything is God, acting directly. The fire is not the agent of burning; it is merely the occasion on which God creates the burning. God, in his settled habit, creates the blackening and consuming of the cotton at the moment the fire touches it - but the fire itself, being inanimate, has no power and does nothing. Every event in the universe is God’s direct creation; the regularities we call ‘laws of nature’ are simply God’s reliable customs, the patterns according to which he chooses to act, moment by moment.

Does this make the world chaotic and unpredictable? Not at all, al-Ghazali insists - and this is the subtle part. God acts according to a settled custom (sunnat Allah), a habit so reliable that fire normally does burn, the sun normally does rise, water normally does quench. The regularity of nature is perfectly real; it is just grounded in God’s constancy rather than in necessary connections within things. So science can proceed exactly as before, cataloguing the patterns - it simply discovers God’s habits rather than nature’s necessities. The difference is invisible in practice but vast in metaphysics: a lawful world held in being by a free God, who could, but normally does not, do otherwise.

This is the opening of the lesson. The rest — the dialogue, the primary source, and the recall — is in the app.

What you'll be able to recall

You learned that al-Ghazali denied necessary causal connection. Reconstruct his fire-and-cotton argument and what he put in causation’s place, in your own words.

Leads to David Hume.

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