Gleanings: The Atomic Theory of the Jainas
Summary
The final section titled “Gleanings: The Atomic Theory of the Jainas” offers a concise exposition of Jainism’s theory of matter. Jain philosophers classify reality into six substances (dravya): sentient souls (jīva) and five categories of non‑sentient entities (ajīva)—matter (pudgala), the principle of motion (dharma), rest (adharma), space (ākāśa) and time (kāla). The article focuses on pudgala, which comprises atoms (aṇu or paramāṇu) and aggregates (skandha). Jain cosmology holds that atoms are eternal, indivisible and possess inherent qualities of colour, taste, smell and touch; each quality exists in multiple varieties (e.g., five colours, two tastes, two smells and eight touches). When atoms combine, they form aggregates exhibiting additional qualities such as sound and form. The combination occurs because of inherent affinities; the article explains that atoms bind together when they possess complementary properties like roughness and smoothness. Larger aggregates can split back into atoms, illustrating the cyclical nature of matter. The theory emphasises that all physical objects—from a speck of dust to a mountain—are composed of these basic units. Beyond describing atomic composition, the article outlines additional characteristics assigned to matter, including mass (guru), lightness (laghu), heat (uṣṇa), cold (śīta), opacity (avachat), divisibility, shape and arrangement. These attributes determine how atoms interact and cohere. The article notes that Jain thinkers recognised that compounds require both homogeneity and heterogeneity; no aggregate can form solely from identical atoms because the absence of contrasting properties would prevent cohesion. This insight resembles modern notions of chemical bonding. The article draws attention to the antiquity of Jain atomic theory and quotes historians of science who praise its sophistication. It argues that the Jain conception predates Greek atomism and that its emphasis on the materiality of karma has ethical implications. In Jainism, karmic particles are a form of matter that binds to the soul because of activities, and liberation involves preventing the influx of new karmas and shedding accumulated karmas.
Summary reviewed by a volunteer editor.
Conclusion
The Jain atomic theory described here illustrates a remarkable integration of metaphysics, physics and ethics. By positing eternal atoms with distinct qualities that combine through inherent affinities, Jain thinkers anticipated ideas that resonate with modern chemistry. At the same time the doctrine serves moral ends: matter, including karmic particles, interacts with the soul according to one’s actions. Understanding this encourages practitioners to discipline their thoughts, speech and deeds to prevent karmic accretions. The article’s gleanings therefore demonstrate that ancient Indian philosophies offered sophisticated models of the physical world while linking them to spiritual liberation.