Nyāyasūtra, which is an ancient Indian Sanskrit text composed by Akṣapāda Gautama, and the foundational text of the Nyaya school of Hindu philosophy, discusses (in book one) the topics of subject matter and statement of purpose, instruments of correct knowledge, nature of argument, how to analyze opposing views, correct conclusions are those where contradictions do not exist, and theory of reasoning methods that are flawed..
Nyāyasūtra, which is an ancient Indian Sanskrit text composed by Akṣapāda Gautama, and the foundational text of the Nyaya school of Hindu philosophy, discusses (in book one) the topics of subject matter and statement of purpose, instruments of correct knowledge, nature of argument, how to analyze opposing views, correct conclusions are those where contradictions do not exist, and theory of reasoning methods that are flawed..