"A secular, rationalist and progressive individualism dominated 'enlightened' thought. To set the individual free from the shackles which fettered him was its chief object: from the ignorant traditionalism of the Middle Ages, which still threw their shadow across the world, from the superstition of the churches (as distinct from 'natural' or 'rational' religion), from the irrationality which divided men into a hierarchy of higher and lower ranks according to birth or some other irrelevant criterion. Liberty, equality and (it followed) the fraternity of all men were its slogans. In due course they became those of the French Revolution. The reign of individual liberty could not but have the most beneficent consequences. The most extraordinary results could be looked for—could indeed already be observed to follow from—the unfettered exercise of individual talent in a world of reason. The passionate belief in progress of the typical 'enlightened' thinker reflected the visible increases in knowledge and technique, in wealth, welfare and civilization which he could see all round him, and which he ascribed with some justice to the growing advance of his ideas. At the beginning of his century witches were still widely burned; at its end enlightened governments like the Austrian had already abolished not only judicial torture but also slavery. What might not be expected if the remaining obstacles to progress such as the vested interests of feudality and church, were swept away?"
January 1, 1970
https://en.wikiquote.org/wiki/Age_of_Enlightenment