Lecture XVIII

Consider the stratum of plant life that covers the earth's soil, i.e. the entire content of vegetation. We must understand that this flora which grows outwards from the soil towards cosmic space, is not only sent out from the earth, but is also drawn outwards by forces that are in continuous operation, and as essential to the growth of plants as the forces working from the earth itself. There is a constant interaction between the forces passing into the plant from the earth, and those acting on the plant from the cosmos outside the earth. What is the essential factor in this interaction that permeates our whole environment? Should these cosmic forces attain their full expression and take full possession of the plant, and should the planets not ensure that these forces can withdraw again, then the plant in its growth from the stalk to the blossom and seed would have the perpetual tendency to become animal. There is a tendency towards animalisation. But this tendency, which expresses Cosmic forces passing into the plant, is counteracted and balanced by the opposite tendency towards suppression of the plant-nature in mineralisation.