Lecture III

But now the human beings would not have been able to evolve further, they could not support the tempo as long as the sun remained with the earth. Then something came about which we can well understand when we are clear that the beings we have called the Fire-Spirits took their scene of action away from the earth. The sun pressed out and we have now sun, with earth and moon together. During this time Mars—in a way which would take too much time to relate now in detail—had again formed a theatre for particular beings, and in its further advance Mars actually passed through the earth and moon and left behind what to-day we know as iron. Hence Mars was the cause of the iron particles deposited in living beings, that is, in the blood. Now someone could say: That is not so very remarkable, iron is everywhere. For just as other bodies were in the primordial mist, so too was Mars with the iron which it left behind. Iron is in all the other planets as well!—Science today, however, wonderfully confirms what is given here from the teaching of spiritual science. You will remember that I once showed you how one passes symbolically from the green sap of the plant, chlorophyll, to the blood of man. Plants arose at the period before this passage of Mars had taken place and have preserved their characteristic. Then the iron was deposited in the beings more highly organized than the plants, permeating the red blood. Thus what has recently been found in a Zurich laboratory is in complete accordance with these spiritual-scientific facts, namely, that blood can-not be compared with chlorophyll, simply because it was deposited later. We must not imagine that blood depends in any way on the substantiality of the chemical element “iron.” I say that especially, because someone might say that one can speak of no connection at all of chlorophyll with the blood. Today science makes the discovery that the blood is to be traced back to the element “iron”—whereas chlorophyll contains no iron. It is nevertheless in the fullest harmony with what Spiritual Science has to say, it is only a matter of looking at things in the right light.