“First delight, then instruct.”
Wilhelm Von Humboldt (1767–1835) German (Prussian) philosopher, government functionary, diplomat, and founder of the University of Berlin
Erst erfreuen, dann belehren.
Karl Friedrich Schinkel and Gustav Friedrich Waagen in "On the Purpose of the Berlin Gallery" [Über die Aufgabe der Berliner Galerie] (1828); occasionally attributed to von Humboldt, who had quoted Schinkel and Waagen in a report.
Misattributed