A Comparative Study of Jaina Taxonomy and Zoological Taxonomy

Summary

In this article Dr. Anindita Mitra compares the taxonomic classification of living beings found in the Jain canon, particularly the Tattvārtha Sūtra, with modern zoological taxonomy. The introduction traces the evolution of classification systems from early folk groupings based on practical uses through the Greek and Christian eras to the eighteenth‑century natural system, noting that Darwin’s evolutionary theory built on changes that were already under way in systematics. While modern zoology classifies organisms according to morphological and genetic similarities, the Jain scriptures approach classification through a spiritual and ethical lens that distinguishes between living substance (jīva‑dravya) and non‑living substance (ajīva‑dravya). This dualism underlies the Jain concept of animism and non‑violence (ahiṃsā); the Jaina ācāryas observed plants and animals and recorded their observations in the Agamas and post‑Agamic texts, emphasising the spiritual value of all life. The Tattvārtha Sūtra classifies beings on three bases: evolution of sense organs, physical mobility and the presence of mind. Single‑sensed or non‑mobile beings include earth‑bodied, water‑bodied, fire‑bodied, air‑bodied and plant beings; mobile beings are classified by the number of senses they possess, with categories of two‑sensed (e.g., worms, leeches), three‑sensed (ants, bugs, moths), four‑sensed (scorpions, spiders, bees) and five‑sensed beings. Among five‑sensed beings the canons distinguish between humans and other animals (tiryancas). Tables presented in the article summarise these sense‑based classes and their sub‑classification, listing examples such as intestinal worms, black ants, scorpions, spiders, fishes, birds, reptiles and mammals. The author notes that mobile beings are further classified by habitat, birth type, mode of movement and structural similarities. An important distinction in Jain texts is the conceptual separation between animals and humans; human beings are classed as a distinct destiny because of their spiritual capacity and are said to possess mind. The article also summarises how later commentators classified living beings based on physical qualities like body size, complexion, passion and consciousness, and how they distinguished between physical and psychical mind. For comparison, modern zoology divides the animal kingdom into non‑chordates (invertebrates) and chordates (vertebrates). The article reproduces tables enumerating the major phyla and classes of invertebrates—Protozoa, Porifera, Cnidaria, Ctenophora, Platyhelminthes, Aschelminthes, Annelida, Arthropoda, Mollusca, Echinodermata and Hemichordata—along with their characteristic features and representative genera. Vertebrates are classified into five classes within phylum Chordata: cartilaginous fishes, bony fishes, amphibians, reptiles, birds and mammals, each defined by distinctive anatomical traits. In contrast to the sense‑based categories of the Jain tradition, zoological taxonomy emphasises structural homology, embryological development and genetic relationships. In her concluding remarks Dr. Mitra acknowledges that the canonical Jain classifications predate modern biology and were a remarkable advance for their time, but she cautions that they are based on pre‑instrumental knowledge and do not account for anatomical distinctions recognized by modern science. The inclusion of animals like intestinal worms and leeches in the same group, or the assertion that all beings possess psychical senses, reflects a qualitative approach aimed at ethical guidance rather than scientific precision. The article suggests that discrepancies regarding the nature of body, number of senses, existence of mind and types of birth can be explained by situating the Jain canon in its historical context. Ultimately, the Jain taxonomy is valued for its moral insight and for the doctrine of non‑violence it promotes, while zoological taxonomy provides a detailed scientific framework grounded in morphology and evolutionary relationships.