I Take it that what lies in the back of the minds of most of us when a subject like this comes up is the problem of the relation between economic unrest and political and social change, and more especially, the kind of change we call a revolution. We all know those for whom the solution of this problem is very simple: they say “look for the economic motive” as innocently as if they said “cherchez la femme.” Even at a more mature level of thinking the problem is still often put in such a way that something economic always lies at the bottom, or pulls the trigger, or provides the main impulse, or—and this is the precious word—“determines” everything.