Vaisheshika is an ancient Indian philosophy that focuses on the nature of reality and the classification of objects in the universe. Founded by the sage Kanada, it emphasizes the importance of understanding the physical world through categories such as substance, quality, action, and relation. The philosophy aims to explain how these categories interact and form the basis of all existence. The Vaisheshika system is often associated with Nyaya, another school of Indian philosophy that deals with logic and epistemology. Together, they explore concepts like causation, perception, and inference, contributing to a comprehensive understanding of knowledge and reality in Indian thought.