Eighteenth-century culture seen as permeated by intellectual and artistic practices and plays pushing principles of reason and rationality to an extreme that becomes self-undercutting. Such obsessions and practices are becoming more visible and prominent now, as the traditional concept of "Enlightenment" (synonymous with the 18th century) is undergoing a profound transformation. Among the protagonists of this seminar will be: Diderot as a philosopher and novelist; Lichtenberg as a scientist and writer of everyday notes; Goya, accusing violence and obsessed with nightmarish visions; Mozart as the excessive master of repetition and variation.