The nation state has never been associated with peace on earth. Its most powerful recommendation and record is, as a matter of fact, as a wager of war. The history of nation states is written around the dates of war, not peace, around arms and not arts. The organization of warfare without the coercive power of the nation state is simply unimaginable at the scale with which we have become familiar.

Foreword (1984) to The Market for Liberty (1970)