This entry is dedicated to Wilhelm von Humboldt. Humboldt developed a radical, innovative liberal ideal compared to the thought which had dominated up until that point and to the German context within which it flourished. Hannah Arendt defined him as “one of the rare genuine German democrats”. He worked concretely as a man of politics, trying to implement his own programme of non-violent renewal, without abrupt pauses (as he explained in Ideen über Staatsverfassung, durch die neue französische Konstitution veranlaßt, 1791) in the various fields that gradually became his areas of expertise, thus in the context of censorship, religion and education (in 1810, he founded the University of Berlin, asking Friedrich Carl von Savigny to teach, among others), and, last but not least, in the general constitutional-governmental framework (acting as the Interior Minister of Prussia in 1819).