" Yet we are currently not really in a crisis for capitalism. We must merely recognize that capitalism must live within certain rules. Indeed our whole view of the economy, with all of those animal spirits, indicates why the government must set those rules. It may be true that in the classical model there is full employment. But in our view the waves of optimism and pessimism cause large-scale changes in aggregate demand. Since wages are determined largely by considerations of fairness, these changes in demand translate not into shifts in wages and prices but into shifts in employment. When demand goes down, unemployment rises. It is the role of the government to mute those changes. "

― George A. Akerlof , Animal Spirits: How Human Psychology Drives the Economy, and Why It Matters for Global Capitalism