THE PLANNED SOCIETY hours) to retain exclusive possession of large empires* British imperialism was all very well when Britain was, relatively, highly populous and, thanks to being an island, invulnerable. For an exceedingly vulnerable and relatively underpopulated Britain, imperialism is the policy of a lunatic. (See Griffin's An Alternative to Rearmament, London, 1936.) Here again the problem raised by a declining birth-rate is not a problem for technicians. It is part of the general problem of international politics and war, and can be solved only when sufficient numbers of people genuinely desire to solve it and are ready to take the appropriate steps for doing so. S5