External pressure seems to produce internal unity.

If we gather more and more data and establish more and more associations, however, we will not finally find that we know something. We will simply end up having more and more data and larger sets of correlations.

To build a theory of international relations on accidents of geography and history is dangerous.

Once socialism replaces capitalism, reason will determine the policies of states.

The transitory interests of royal houses may be advanced in war; the real interests of all people are furthered by the peace.

Each state pursues its own interest's, however defined, in ways it judges best. Force is a means of achieving the external ends of states because there exists no consistent, reliable process of reconciling the conflicts of interest that inevitably arise among similar units in a condition of anarchy.

To solve these problems one needs as much an understanding of politics as an understanding of man - and the one cannot be derived from the other.