LitCharts assigns a color and icon to each theme in The Once and Future King, which you can use to track the themes throughout the work.
Chivalry, Satire & Medieval Life
Fate (Time)
Quest and The Holy Grail
Might vs. Right
War
Summary
Analysis
Days and nights passed. Wart becomes fond of Lyo-lyok; she teaches him about the geese—how they have no kings, they do not own things in common, but nor can they own any territorial property. One day, the geese take flight again, returning to their starting place after the winter. Suddenly, Wart is back in his bed; Kay is asking exasperatedly why he was honking like a goose in his sleep.
The governance of the geese is somewhat peculiar—almost socialist. They have no ruler, no property rights and also no conflict. It seams ideal, yet somewhat impossible to maintain.