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.

The most important causes of political arrangements and acts are found in the nature and behavior of man.

External pressure seems to produce internal unity.

With many sovereign states, with no system of law enforceable among them, with each state judging its grievances and ambitions according to the dictates of its own reason or desire - conflict, sometimes leading to war, is bound to occur.

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

It is not true that were the Soviet Union to disappear the remaining states could easily live in peace.

In anarchy there is no automatic harmony .