Through the sign, through the rivers, the heavenly find their unity with one another, a unity which does not diminish their singularity. The rivers are their "joy." Hölderlin speaks of staircases on which the heavenly can descend. Where there are staircases, a dwelling place is also opened up poetically for humans. Poetising founding builds the stairs for this descent of the heavenly. The rivers are the children of the heavens, signs that bear sun and moon in mind, but at the same time the sons of the earth.