What is the secret to happiness? King Solomon was one of the greatest superachievers of all time and fabulously wealthy. He also had a reputation as the wisest man in the world. But at the end of his life he was so unhappy that he felt moved to cry out "all is vanity" and wish he had never been born. In Ecclesiastes, Solomon brilliantly diagnoses the causes of our continuing unhappiness and boils down the secret of peace and contentment to a few essential ingredients. The Great Reduction explains why his prescription for peace is just as relevant today as the day it was written. It also uses his diagnosis to shed light on a happiness that goes far beyond anything Solomon could have imagined.