#The "invisible hand" of the market
Adam Smith, an 18th century Scottish academic, was one of the first economists to advocate liberalism. He believed that the freedom of individuals leads to a win-win situation for society as a whole.
Thus, each individual, by seeking his or her own interest, contributes unintentionally to the well-being of society. Indeed, in a market economy, every person will seek to increase his personal satisfaction through financial enrichment. As a result, the individual will select the most promising sectors or those for which he or she has the highest skills.
In this way, the operations of agents, apparently independent of each other, would be coordinated by an "invisible hand" that would make it possible to achieve the general interest. The search for personal enrichment benefits overall well-being since it encourages people to give the best of themselves and ultimately to boost economic activity.
Example : The baker who kneads his bread in the best possible way (not out of altruism) to satisfy his customers and enrich himself (encourages consumption...).
CJEA