The author of this volume Dr. Ratan Lal Basu is a Ph. D. in Economics (on Arthaśāstra, the treatise on political economy and statecraft composed by a Brāhmaṇa scholar Kauṭilya around 300 B. C.). He retired as principal from a Government-Sponsored College at Kolkata, and after retirement got fully occupied with research and publishing activities pertaining to Indology, ancient economics, modern economic problems, economic history, yoga and tantra cult, statecraft, international relations and espionage, ethics and morality and also fiction in English and Bengali (his mother tongue).