Translations:Benutzer:Arian/Klett-Mini-Test/865/en

In the formation of humus from the manifold coloured and formed organic residues, there likewise unfolds a ripening toward a kind of organic-mineral fruit, the clay-humus complex already described. This "fruit" is black through and through — an image of what in ancient Persian times was set over against the "light" (the cosmic pole) as "darkness" (the earthly pole). In humus, the universal-plantlike that has become wholly "earth": humus "is the end-product of the earthy with the earthy." "The cosmic rock, the siliceous, takes the light into the earth and brings it to working within the earthly" — the humus does not. It is a "lightless working" that it "produces." This indication points among other things to the breaking-down and building-up of humus that takes place in the darkness of the soil, carried out by heterotrophic, bacterial-plant life.