Book 15, "Tamtrayuktih" (The Plan of a Treatise), is Kautilya’s metatext: a lucid manual on how to frame, order and teach statecraft. Emerging from the Mauryan milieu attributed to Chanakya (Kautilya), it outlines rules of composition—definitions, divisions, aphorisms, examples and cross-references—so practical wisdom becomes teachable and secure. Themes include methodical arrangement, concise expression, contextual exposition, and the moral-political purpose of knowledge. Tamtrayuktih reveals the Arthashastra not merely as policy but as a disciplined pedagogy for rulers and ministers. Today it remains relevant for writers, policymakers and administrators: a timeless guide to structuring complex practical knowledge with clarity, economy and ethical intent.