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Wellsprings
cosmology

The Four Elements

στοιχεῖα

Earth, water, air, and fire — the four 'roots' that, mixing and separating in endless proportions, were said to make up everything in the world.

The four elements—earth, water, air, and fire—form the foundational material of the cosmos according to ancient Greek natural philosophy. While earlier thinkers like Thales and Heraclitus proposed single primary substances, Empedocles of Acragas (5th century BCE) systematized the theory that all matter is composed of these four distinct elements in different proportions. Each element carries a fundamental quality: fire is hot, water is moist, air is cold, and earth is dry. These elements combine and separate continuously, explaining change and variety in the natural world.

This framework became the dominant model for understanding matter across the classical world. The theory provided a practical way to explain physical phenomena: why wood burns (releasing fire and air), why some substances dissolve in water, or why earth sinks to the bottom of a container. Later philosophers, including Aristotle, adopted and refined the elemental system, making it central to natural science for over two thousand years. The four elements remained the standard explanation for physical composition until the development of modern chemistry.

Where this idea shows up

85 Greek sources·7 Jewish-canon citations

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