For nearly twenty years, from the mid-1970s to the mid-1990s, he spent his summers teaching political philosophy and American political and intellectual history to university students at seminars sponsored by Cato Institute and IHS.
Около двадцати лет, с середины семидесятых до середины девяностых, отданы им преподаванию политической философии и американской политики студентам на семинарах, спонсированных институтом Катона и IHS.