Chanakya was the author of Arthashastra. Arthashastra is an ancient Indian treatise on statecraft, economic policy, and military strategy. It was written by Chanakya, also known as Kautilya or Vishnugupta, who was a renowned scholar, teacher, and advisor to the Mauryan emperor Chandragupta. The Arthashastra provides detailed guidance on governance, administration, diplomacy, and warfare, making it an important text in the field of political science and ancient Indian history.