The book was critical in establishing a general worldwide opinion that the Versailles Treaty was a brutal and unfair peace towards Germany. It helped to consolidate American public opinion against the treaty and involvement in the League of Nations. The perception by much of the British public that Germany had been treated unfairly in turn was a crucial factor in public support for appeasement.
Keynes was a genius who put forth fundamentals of economic theory and was a visionary who saw further than anyone of his time. Despite what certain readers may think, this book is NOT about war being "good" but rather the crippling effects of reparations on Germany, and consequently, the world.
Keynes is a fool.
The mere idea that peace can harm an economy should be laughed at by anyone who proposes it, but Keynes is the same buffoon who put forth the BROKEN WINDOW THEORY. The fact that so many people within academia idolize this man is beyond scary.
Government is at fiction where it can spend money to stimulate the economy. Any real Data that compares government spending as a fraction of the economy and Real GDP Per Capita growth will show that increasing government spending has a negative effect. Government spending creates no wealth. Government can only move it around.