General Zhang Zhen, First PLA NDU President (1985): "The concept of national defense includes military affairs & related political, economic, cultural, diplomatic, and other aspects. It is not limited to the military and is not equivalent to the military. From the perspective of
Marxist principles, military affairs, politics, and the economy cannot be mechanically separated. War is the continuation of politics, and economic strength is the material basis of violence. The National Defense University trains senior commanders. They should all be versatile