Theories about international law, like the forms of action in Maitland\u27s conception, have unhappily the power of ruling us from their graves. There is a subtle interaction, wrote the late Professor Brierly in his own somewhat quixotic search for the basis of obligation in international law, between theory and practice in politics, not always easy to trace because the actors themselves may easily be unconscious of their theoretical prepossessions which, nevertheless, powerfully influence their whole attitude towards practical affairs; and at no time has it been so important, as it is today, that we should see the facts of international life as they really are, and not as they come to us reflected in false or outworn theories. It is ...