 Conceptual history may appear to have a Kantian background—an exploration of the “categories” of thought on the basis of which alone history is intelligible. But this appears not to be Koselleck’s intention, and his approach is not apriori. Rather, he looks at historical concepts on a spectrum of abstraction, from relatively close to events (the French Revolution) to more abstract (revolutionary change). Moreover, he makes rigorous attempts to discover the meanings and uses of these concepts in their historical contexts.