Discourse on the Origin and Basis of Inequality Among Men (French: Discours sur l'origine et les fondements de l'inégalité parmi les hommes), also commonly known as the "Second Discourse", is a 1755 treatise by philosopher Jean-Jacques Rousseau, on the topic of social inequality and its origins. The work was written in 1754 as Rousseau's entry in a competition by the Academy of Dijon, and was published in 1755.
Rousseau first exposes in this work his conception of a human state of nature, broadly believed to be a hypothetical thought exercise and of human perfectibility, an early idea of progress. He then explains the way in which, in his view, people may have established civil society, and this leads him to conclude that private property is the original source and basis of all inequality.
