He's won my grudging respect for his ideological consistency over 40 years and a voting record that matches his stated ideals. These days he'd also be what we call a "conservative intellectual", although that is mainly a reflection on state of conservatism than because his ideas are terribly original.
In the American context of conservatism, perhaps. To my eyes he's unashamedly liberal.
All this end militarism, legalise this and that sounds good, but at the end of the day he's a libertarian and thus a HP.