Shikshapatri 158

The rulers shall acquire perfect knowledge of: 1. The seven constituent parts of the state, 2. The four expedient devices, 3. The six aspects of diplomacy. They shall also study and understand (through spies) the nature of bureaucrats appointed in various posts in their kingdom. They shall appoint persons who well-versed in the art of state crafts as ministers and shall be able to identify by their characteristics, the persons who deserve to be punished and those who do not deserve to be punished. (158)**