"Harmonies of Political Economy" is a major work by the French economist Frederic Bastiat, who lived from 1801 to 1850. The book, which was first published in 1850, explores the principles of economic theory and argues that free markets are the most effective way to promote economic growth and prosperity. Bastiat believed that government intervention in the economy, such as tariffs, subsidies, and regulations, were counterproductive and tended to distort markets and create inefficiencies. He argued that free trade, competition, and individual liberty were the key ingredients to a harmonious and prosperous society. In "Harmonies of Political Economy," Bastiat also discussed the concept of economic harmony, which refers to the idea that individual self-interest and the pursuit of profit can lead to outcomes that benefit society as a whole. He argued that the market was a self-correcting mechanism that could adjust to changing conditions and ensure that resources were allocated efficiently. Overall, Bastiat's work in "Harmonies of Political Economy" was influential in the development of classical liberal economic thought and remains relevant today in debates over the role of government in the economy.