Meliorism is an idea in metaphysical thinking holding that progress is a real concept leading to an improvement of the world. It holds that humans can, through their interference with processes that would otherwise be natural, produce an outcome which is an improvement over the aforementioned natural one. Meliorism, as a conception of the person and society, is at the foundation of contemporary liberal democracy and human rights and is a basic component of liberalism. A closely related concept discussed by Jean-Jacques Rousseau and Marquis de Condorcet is that of .