首楞嚴義疏注經 4.85

4.85

火炎上而就燥，水降注而流濕，交互擊發，立成堅礙。火雖炎上而相擊發，終為水克，故大海廣而洲潬狹也。皆由妄性不常，前後變異，愛心多故成巨海，執心盛故成洲潬。嗔性生慢，執性生嗔，於色起愛潬中流水，違愛生嗔海中火起。水中可居曰洲，水中沙聚曰潬。

Fire blazes upward toward dryness, and water descends flowing toward moisture; interacting and striking against each other, they instantly form solid obstruction. Although fire blazes upward and they strike against each other, in the end it is conquered by water; therefore, the great oceans are vast while continents and islets are narrow. This is all because the false nature is impermanent, mutating from before to after: because the mind of craving is abundant, it forms the great oceans; because the mind of clinging is strong, it forms continents and islets. The nature of anger generates arrogance, the nature of clinging generates anger; giving rise to craving toward form produces flowing water on the islets; defying craving generates anger, producing fire in the ocean. Habitable land amidst water is called a continent (zhou); a sandbar amidst water is called an islet (tan).