-520 – -460
Pāṇini was an ancient Sanskrit grammarian from the Indian subcontinent, widely regarded as the founder of linguistics as a formal discipline. His masterwork, the Aṣṭādhyāyī, is a systematic treatise on Sanskrit grammar comprising nearly 4,000 rules, and is considered one of the most sophisticated descriptive grammars ever produced in the pre-modern world.
Authored the Aṣṭādhyāyī, a comprehensive generative grammar of Sanskrit
Developed a formal metalanguage and rule-ordering system anticipating modern formal linguistics
Introduced concepts analogous to context-sensitive rules and recursive derivation
Established the foundations of the Vyākaraṇa school of Hindu philosophy
Influenced later linguistic theory, including 20th-century structuralism and generative grammar