José Villacís, the author of over 100 publications on macroeconomics, has spent nearly 20 years researching and developing the thoughts of Bernácer. In the course of this work he corresponded with the Nobel prize winners Paul A. Samuelson and Robert M. Solow and that correspondence is reproduced in this book, prefaced by Professor Samuelson. This is a different macroeconomics. The key to Bernácer's pioneering thought is that financial speculation is the root cause of economic crises. With this thesis he anticipated the crisis we are now immersed in by almost a century, line by line, and concept by concept.