Locke promoted the idea that when every individual pursues happiness, cooperation is promoted causing individual and general welfare to coincide. .
These ideas also had a tremendous impact on political thinkers such as Montesquieu and Rousseau in France who were under the corrupt regimes of Louis XV and Louis XVI. Both of these men profoundly influenced political thought in France as well as providing the public with a theoretical justification for the French Revolution. Montesquieu, widely considered as the father of political science, was a French lawyer who's political ideas flourished during the Enlightenment. He looked at the various kinds of government and completed analysis of what made them effective in his book, The Spirit of the Laws. He is also responsible for the development of the idea that powers in government should be separate, something that in modern times has become ingrained into several important political documents, such as the American Constitution. .
Jean-Jacques Rousseau was another French political thinker of the Enlightenment era inspired by Locke. His books are considered to be cornerstones in the development of modern political thought. Perhaps his most famous work, The Social Contract, provides a blueprint for the basis of rightful political order within the existing structure of classical republicanism. It was Rousseau's belief that people could only truly live by laws they made themselves, any other law making processes put the people as victims of someone else's tyranny. Rousseau's ideal state would be a small-scale democracy in which everyone participates, truly making the government for the people, by the people. Together, Lock, Montesquieu, and Rousseau, provided a foundation for modern ideas on personal rights and liberties and how government can be structured to guarantee those rights and liberties to all citizens. .
The most important figure in Enlightenment economics was Adam Smith who is considered to be both a pioneer in political economy and the father of modern economics.