Irrational Exuberance Second Edition is a Must Read

Irrational Exuberance Second Edition by Robert Shiller discusses the causes of the stock market boom of the 1990s and the housing boom that followed. Shiller says both booms were the result of excessive speculation that is inherently risky and unstable.

The book is based on Shiller's years of research and thinking about how and why people invest their money and how markets function.