This is a piece on WSJ by TMF analyst Morgan Housel.
In the 1970s, most theories held that modern economies were fundamentally stable. Deep recessions and financial crises were anomalies, caused by outside “shocks” such as bad policy, war or a spike in oil prices.
Mr. Minsky, an economist at Washington University in St. Louis who died in 1996, didn’t buy this.
…
In short, Mr. Minsky believed that a stable economy leads to optimism, optimism leads to excessive risk-taking, and excessive risk-taking leads to instability.
“Success breeds a disregard for the possibility of failure,” he wrote. Booming business and “the absence of serious financial difficulties over a substantial period” leads to a “euphoric economy” where consumers and businesses grow increasingly comfortable taking on debt in pursuit of profit.
http://www.wsj.com/articles/why-bear-markets-are-inevitable-…
Anirban