XI. Progressive Development Through The Different Cycles Of Culture

You must then bear in mind the following: An apparently insignificant process (but in the light of spiritual science it is an extraordinarily important process) took place at that time: it already began in the early stages of the Earth's separation from the Moon, when the Earth was still connected with the Moon, and it consisted in a certain cooperation between Mars and the Earth. During the whole first half of the Earth's development, the forces of Mars streamed into the Earth, so that this first half is actually designated as the Mars condition of the Earth. Iron is connected with this passage through Mars and iron then began to play an entirely new role in the earthly process of evolution.