Siddhasena

Siddhasena was a significant Indian philosopher and logician, particularly noted for his contributions to Jain philosophy in the 7th century CE. He is recognized as the first great logician within the Jain tradition, building upon earlier ideas in logic and epistemology.1

Jain philosophy, founded by Vardhamana Mahavira, emphasizes moral and ascetic living and the doctrine of ahimsa (non-injury to all living beings). Key metaphysical concepts in Jainism include the distinction between soul (jiva) and non-living substance (ajiva), the principle of anekantavada (nonabsolutism), and the doctrine of karma as a substance linking cause and effect. Siddhasena's work contributed to the development of a unique seven-valued logic within Jainism, where statements can hold multiple truth values simultaneously.1