Earlier ages fortified themselves behind the sovereign state, behind protectionism and militarism.

Europe cannot survive another world war.

But teleological considerations can lead no further than to a belief and a hope. They do not give certainty.

History shows us that other highly developed forms of civilization have collapsed. Who knows whether the same fate does not await our own?

Technology is a useful servant but a dangerous master.

Like all social theories, internationalism must seek its basis in the economic and technical fields; here are to be found the most profound and the most decisive factors in the development of society.

No state is free from militarism, which is inherent in the very concept of the sovereign state. There are merely differences of degree in the militarism of states.