George Orwell said this quote

As for the problem of overproduction, which has been latent in our society since the development of the machine technique, it is solved by the device of continuous warfare, which is also useful in keying up public morale to the necessary pitch....The problem, that is to say, is educational. It is a problem of continuously molding the consciousness both of the directing group and of the larger executive group that lies immediately below it. The consciousness of the masses needs only to be influenced in a negative way.