Stock market bubbles don't grow out of thin air. They have a solid basis in reality, but reality as distorted by a misconception.
George SorosI put forward a pretty general theory that financial markets are intrinsically unstable. That we really have a false picture when we think about markets tending towards equilibrium.
George SorosThe reality is that financial markets are self-destabilizing; occasionally they tend toward disequilibrium, not equilibrium.
George Soros