I have been told that one of the reasons the astronomers of the world cooperate is the fact that there is no one nation from which the entire sphere of the sky can be seen. Perhaps there is in that fact a parable for national statesmen, whose political horizons are all too often limited by national horizons.

Stevenson uses an observation about astronomy as a civic metaphor. Because no single country can view the entire celestial sphere from its latitude, astronomers must share observations and coordinate work to understand the whole sky. He suggests that international politics faces an analogous limitation: statesmen often mistake their nation’s partial vantage point for the whole picture. The “parable” urges humility about national perspectives and argues for cooperation, information-sharing, and institutions that aggregate viewpoints across borders. Implicitly, it critiques parochial nationalism and frames global problems as requiring the same collaborative habits that make scientific knowledge possible.