History demonstrates that participants in financial markets are susceptible to waves of optimism. Excessive optimism shows the seeds of its own reversal in the form of imbalances that tend to grow over time.
Alan GreenspanCapitalism is based on self-interest and self-esteem; it holds integrity and trustworthiness as cardinal virtues and makes them pay off in the marketplace, thus demanding that men survive by means of virtue, not vices. It is this superlatively moral system that the welfare statists propose to improve upon by means of preventative law, snooping bureaucrats, and the chronic goad of fear.
Alan Greenspan