4. The Human Organism Through the Incarnations

I will begin today by adding a few things to what we have said over the years about spiritual science. One of the most elementary facts we know is that human beings as they have developed through what we have called Saturn, Sun, Moon, and Earth phases of evolution are composed of four principal parts, namely physical body, etheric body, astral body, and I. We have often emphasized that merely naming the four parts of human beings and listing them is saying and doing very little. What is important is that we connect increasingly definite and concrete ideas and concepts with what arises in our soul when we speak of these four parts of the human being.