Kanada is considered the father of Indian logic for his contributions to the Vaisheshika school of thought, which emphasized the importance of logic and reasoning in understanding the world.

Kanada, the founder of the Vaisheshika school of philosophy, is credited with developing the theory of atomism, which posits that all matter is composed of tiny, indivisible particles called atoms.

Mahavira, the founder of Jainism, is renowned for his emphasis on non-violence and ahimsa, advocating for the avoidance of harm to all living beings.

Gotama Buddha, the founder of Buddhism, is widely recognized for his teachings on karma and reincarnation, emphasizing the consequences of one's actions and the cycle of rebirth.

Kapila, the founder of the Samkhya school of philosophy, is known for his concept of moksha or liberation, which involves the separation of the soul from matter and the attainment of a state of pure consciousness.

Nagarjuna, a prominent Buddhist philosopher, is renowned for his theory of sunyata or emptiness, which emphasizes the lack of inherent existence of all phenomena.

Adi Shankara, a renowned philosopher of the Advaita Vedanta school, is known for his concept of advaita or non-dualism, which posits that the ultimate reality is one and indivisible.

Ramanuja, a prominent philosopher of the Vishishtadvaita school, is known for his theory of bhakti or devotion, emphasizing the importance of love and surrender to God.

Madhvacharya, a philosopher of the Dvaita school, is known for his concept of dvaita or dualism, which posits that God, the soul, and the world are distinct and separate entities.

Jaina philosophers, particularly those belonging to the Syadvada school, are known for their theory of syadvada or anekantavada, which emphasizes the multifaceted and complex nature of reality.

Dignāga, a prominent Buddhist philosopher, is known for his work on pramana or valid knowledge, developing a system of logic and epistemology to determine the reliability of knowledge.

Vasubandhu, a renowned Buddhist philosopher, is known for his contributions to the Abhidharma school, which focuses on the analysis of mental phenomena and the nature of reality.

Isvarakrishna, a philosopher of the Samkhya school, is known for his work on the Samkhya Karika, which outlines the tattvas or categories of reality, providing a systematic framework for understanding the world.

Gangesha Upadhyaya, a prominent philosopher of the Navya-Nyaya school, is known for his contributions to the development of new logic, refining and systematizing the traditional Nyaya system of reasoning.

Bharata Muni, the author of the Natya Shastra, is known for his contributions to the theory of rasa or aesthetic experience, outlining the various emotions and sentiments that can be evoked through performance arts.