Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 34

Sanskrit:

सरहस्यं धनुर्वेदं धर्मान् न्यायपथांस्तथा ।तथा चान्वीक्षिकीं विद्यां राजनीतिं च षड्‍‍विधाम् ॥ ३४ ॥

ITRANS:

sa-rahasyaṁ dhanur-vedaṁdharmān nyāya-pathāṁs tathātathā cānvīkṣikīṁ vidyāṁrāja-nītiṁ ca ṣaḍ-vidhām

Translation:

He also taught Them the Dhanur-veda, with its most confidential secrets; the standard books of law; the methods of logical reasoning and philosophical debate; and the sixfold science of politics.

Purport:

Śrīla Śrīdhara Svāmī explains that the confidential portion of the Dhanur-veda, military science, includes knowledge of the appropriate mantras and presiding deities of warfare. Dharmān refers to the Manu-saṁhitā and other standard lawbooks (dharma-śāstras). Nyāya-pathān refers to the doctrine of Karma-mīmāṁsā and other such theories. Ānvīkṣikīm is knowledge of the techniques of logical argument (tarka). The sixfold political science is quite pragmatic and includes (1) sandhi, making peace; (2) vigraha, war; (3) yāna, marching; (4) āsana, sitting tight; (5) dvaidha, dividing one’s forces; and (6) saṁśaya, seeking the protection of a more powerful ruler.