Lecture Four

You are aware that the Earth's axis lies obliquely upon the Ecliptic, and that the Astronomers speak of an oscillation of the Earth's axis around this point and they call this ‘Nutation’. The axis completes one revolution around this point in just about 18 years (it is really 18 years, 7 months, but we need not consider the fraction, although it is quite possible to calculate this too with exactitude.) But with these 18 years something else is intimately connected. For it is not merely on the fact of ‘Nutation’—this ‘trembling’, this rotation of the Earth's axis in a double cone around the Earth's centre, and the period of 18 years for its completion—it is not only on this fact that we have to fix our minds, but we find that simultaneously with it another process takes place. The Moon appears each year in a different position because, like the Sun, she ascends and descends from the ecliptic, proceeding in a kind of oscillating motion again and again towards the Equator ecliptic. And every 18 years she appears once more in the same position she occupied 18 years before. You see there is a connection between this Nutation and the path of the Moon. Nutation in truth indicates nothing else than the Moon's path. It is the projection of the motion of the Moon. So that we can in actual reality observe the “breathing” of the Macrocosm. We only need notice the path of the Moon in 18 years or, in other words, the Nutation of the Earth's axis. The Earth dances, and she dances in such a manner as to describe a cone, a double cone, in 18 years, and this dancing is a reflection of the macrocosmic breathing. This takes place just as many times in the macrocosmic year as the 18 human respirations during the microcosmic day of 24 hours.