L.N. Rangarajan graduated from the University of Madras with an M.Sc in experimental physics. He joined the Indian Foregin Service in 1956 and has been Ambassador to Greece, Sudan, Tunisia, Norway and Iceland.

Kautilya: The Arthashastra, published in 2000 by Penguin Classics is the English edition of the classic treatise on classical economics and political science by the ancient Indian philosopher Kautilya. The text of this great book includes 15 books, each addressing one topic pertaining to the state and its economy. The books include topics like the law, the king, foreign policy, discipline, capturing a fortress, and the duties of the government rulers. Kautilya explains in detail the duties and virtues of an ideal king. The descriptions include a break up of what the ideal king should do during the course of the day and how the king should behave in typical situations. The Arthashashtra also includes detailed strategies like gift, bribery, illusion, and strength to deal with the neighbouring countries. The other important sections of the book include maintenance of law and order in the state, forests and wildlife, and economic ideas. The book discusses how the Mauryans protected forest wealth, including trees and animals. The importance of maintaining law and order for smooth functioning of the state is also given importance.