The simultaneous reactions elicited all over the world by the reading of newspaper dispatches about the same events create, as it were, a common mental pulse beat for the whole of civilized mankind.

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

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.

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

All species capable of grasping this fact manage better in the struggle for existence than those which rely upon their own strength alone: the wolf, which hunts in a pack, has a greater chance of survival than the lion, which hunts alone.

The theoretically unrestricted right to develop power, to wage war against other states, is antisocial and is doubly dangerous, because the state as a mass entity represents a low moral and intellectual level.

A pacifist will often - at least nowadays - be an internationalist and vice versa. But history shows us that a pacifist need not think internationally.