In that short sentence Hans Morgenthau describes one role of the intellectual who relates himself to the political world. It is clear, from the way he states it, that he admires this vocation. It is also clear, from his own career, that he has often exercised that vocation.

Morgenthau's eminence is such that he needs no praise from me. As an analyst of international affairs he is a brilliant scholar, a shrewd observer of the actions behind the headlines, a puncturer of pomposities, and an irritant to sluggish minds. These qualities are sufficiently well known that I shall not elaborate them.