Which belief system does this quote belong to and why A ruler makes use of the majority and neglects the minority, and so he does not devote himself to virtue but to law."

Chinese Legalism

Explanation:

This belief system is related to the Chinese philosophy of Legalism. This is a political philosophy that emphasizes the importance of consolidating wealth and power of the state in one single person in order to achieve a stable society. This consolidation is achieved through the use of an effective and centralized bureaucracy. This is often connected with the Western ideas of Machiavellism and Realpolitik.