बलं विद्या च विप्राणां राज्ञां सैन्यं बलं तथा ।
बलं वित्तं च वैश्यानां शूद्राणां पारिचर्यकम् ॥२.१६॥

balaṃ vidyā ca viprāṇāṃ rājñāṃ sainyaṃ balaṃ tathā |
balaṃ vittaṃ ca vaiśyānāṃ śūdrāṇāṃ pāricaryakam ||2.16||

the strength of a Brahmin is his knowledge, the Kshatriya ruler’s strength is his army, the strength of a Vaishya is his wealth, a Shudra’s strength is his service

[Brahmin (priests, teachers, physicians), Kshatriya (kings, rulers, soldiers), Vaishya (merchants, traders, businesspersons), and Shudra (servants, employees, workers).]

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Excerpt from the book “Old Chanakya Strategy: Aphorisms” by Rajen Jani