Which philosophers have been most important to legal scholarship?

24 choices, the survey will close on Friday.  The list includes only philosophers whose main contributions weren't in jurisprudence, but who nonetheless have had an important impact on legal scholarship and legal theory.  Mostly non-living candidates, except for some very senior philosophers.  Curious to see what readers think.  Remember, the question isn't how good you think these philosophers are (some of the more influential ones, like Derrida, are generally thought to be charlatans by philosophers), but their importance for legal scholarship.