He speculated that the river Pishon represents prudence, the river Gihon is the symbol of sobriety, the Tigris symbolizes fortitude, and the Euphrates denotes justice.
Filons uzskatīja, ka Pišona simbolizē apdomību, Gihona — nopietnību, Tigra — gara spēku un Eifrata — taisnīgumu.