The Enlightenment was the broad movement of European thought, centred on the eighteenth century and on France, Scotland and Germany, which held that the natural and social worlds are intelligible to human reason, that knowledge should rest on observation and criticism rather than scripture or custom, and that societies can be deliberately improved. Kant summarised its motto as the courage to use one's own understanding.
Where it comes from
Its immediate parents were the scientific revolution of Galileo and Newton and the rationalism of Descartes, which showed that nature obeys discoverable laws. Enlightenment thinkers — Montesquieu, Voltaire, Diderot, Rousseau, Hume, Adam Smith, Condorcet — extended that promise to human affairs. The political and economic upheavals that followed, above all the French Revolution and industrial capitalism, turned abstract speculation into an urgent question about how order is possible at all.
Why it matters
Sociology is unthinkable without four Enlightenment commitments: that society is a natural object open to systematic study, that it is man-made rather than divinely fixed, that its development can be described as progress through stages, and that knowledge should serve reform. Comte's positivism, with its law of three stages and its ambition of a social physics, is the Enlightenment programme carried into the nineteenth century. Marx inherited its emancipatory claim, Durkheim its faith in science, Weber its account of rationalisation — though Weber read that legacy far more darkly.
Points of debate
The counter-Enlightenment reaction of de Maistre, Burke and later conservative thought insisted that tradition, religion and community are the real sources of social cohesion, not reason. Romanticism attacked its thin picture of the person. Later, Horkheimer and Adorno argued that instrumental reason had turned against human freedom, and postcolonial critics have shown how universal reason accompanied empire. Feminist scholarship notes that its autonomous individual was implicitly male.
For the UPSC answer
Treat the Enlightenment as the intellectual condition of sociology's birth, with industrial capitalism and political revolution as its material conditions — the paper expects all three together. Name the four inherited commitments, then show that the discipline also carries the counter-Enlightenment critique inside it, which is exactly why Durkheim and Marx disagree about what modernity does to solidarity.
References & further reading
- Kant, I. (1784). An Answer to the Question: What is Enlightenment?
- Hamilton, P. (1992). The Enlightenment and the Birth of Social Science. In Hall, S. and Gieben, B. (eds.) Formations of Modernity. Polity.
- Giddens, A. (1990). The Consequences of Modernity. Polity.