4. The Unification of Humanity through the Christ Impulse

At what period in human evolution was this? All the forces that counteract the original, identical design of our physical body are at work in us mostly in the first seven years of life, when the physical body is still soft and pliant. They do not allow our physical body to become the same everywhere, but from within the body they immobilize the forces for the original identical design.[^3] These opposing forces can still go on working in the second seven years until puberty; indeed, they can even continue to work in the third and fourth seven-year periods during the development of the astral body and the sentient soul. However, in the middle of the development of the intellectual or mind soul, which evolved above all in the fourth post-Atlantean or Greco-Roman time, the extra-earthly forces are less and less able to reach us. And in the very midst of this development, that is, in the period between our twenty-eighth and thirty-fifth years, they have least access to us. If we add two years at the beginning of this period and subtract two years at the end, the time in question is that between the thirtieth and the thirty-third year. In the time following those years, extra-earthly forces once more have the greatest influence. The period from the thirtieth to the thirty-third year, however, is the time of the greatest influence of earthly forces on the human being. And if in this period of three years there remained only the degree of diversity that existed in younger years and only what is to appear in later years would be added—in short, if only what works on human beings between the thirtieth and the thirty-third year remained effective, then people would indeed be much more alike.