The Nyaya-Vaiseshika school recognizes six categories of existence: substance, quality, action, generality, particularity, and inherence. Action is not included in this list.

The Nyaya-Vaiseshika school primarily relies on deduction as its method of inquiry. It uses logical arguments and syllogisms to establish the truth of its claims.

The Nyaya-Vaiseshika school holds that perception is a valid source of knowledge. It argues that the senses provide us with accurate information about the world around us.

The Nyaya-Vaiseshika school maintains that substance is the cause of quality. It argues that qualities cannot exist independently of substances.

Asatkaryavada is a fundamental concept in the Nyaya-Vaiseshika theory of causation. It states that an effect cannot be produced from a non-existent cause.

The Nyaya-Vaiseshika school holds that the universe is an eternal and self-existent entity. It argues that the universe has always existed and does not require a creator.

The Nyaya-Vaiseshika school maintains that knowledge is objective and universal. It argues that knowledge is not dependent on the individual knower but rather exists independently of the knower.

The Nyaya-Vaiseshika school argues that evil is the result of human actions. It maintains that humans have the freedom to choose between good and evil and that evil is a consequence of their bad choices.

Moksha is a key concept in the Nyaya-Vaiseshika theory of liberation. It refers to the state of liberation from the cycle of birth, death, and rebirth.

The Nyaya-Vaiseshika school maintains that the individual soul is a part of the universal soul. It argues that the individual soul is a fragment of the universal soul that has become separated from the whole.

The Nyaya-Vaiseshika school is renowned for its development of a systematic theory of logic. Its logical theories have had a profound influence on Indian philosophy and have been widely adopted by other schools of thought.

The Nyaya-Vaiseshika school had a significant influence on the development of other schools of Indian philosophy. Its logical theories were adopted by Buddhist and Jain philosophers, and its metaphysical and epistemological ideas stimulated philosophical inquiry across various traditions.

The Nyaya-Vaiseshika school had a particularly strong influence on the development of Buddhist philosophy. Buddhist logicians and philosophers adopted and adapted many of the Nyaya-Vaiseshika logical theories and concepts.

The Nyaya-Vaiseshika school made significant contributions to the development of scientific thought in India. Its emphasis on logical reasoning and empirical investigation provided a framework for scientific inquiry. Additionally, its theories on atomism and the nature of matter stimulated the development of astronomy and mathematics.

Gautama is widely regarded as one of the greatest exponents of the Nyaya-Vaiseshika school. He is credited with systematizing the school's philosophical doctrines and writing the Nyaya Sutras, a foundational text of the Nyaya school.