Schools must again teach people something of value. Today, much importance is placed on learning the skills required for making machines. Nothing can be said against this from the standpoint of spiritual science because it is quite worthwhile.
But the skills needed to cope among human beings are neglected. An abstract social science, ignorant of man’s needs, was invented and this is taught instead. Above all, one must study man as we have done here, but unhappily what I told you is not taught. Look back on your own school days! Where is something like this taught today? That is what our age lacks. Teaching men the things they learn today is about as good for them as feeding them rocks instead of bread. Maybe the stomach of a goose can take rocks but that of a human being cannot! To do so would ruin the digestive system, and when you teach men what is being taught today, you actually ruin their heads.
You know that the arm becomes weak if it is unused, and the head also becomes weak if it is not used in the right way. While the head was developing in the mother, it received forces from the stars. If it is told nothing about them, if it entertains no thoughts of them, it grows weak, just as muscles do when they are not exercised. If the child learns nothing of the real world, it remains weak.
The worst thing about conditions today is that people have weak heads and do not understand anything about one another. They separate themselves according to social standing and do not speak to those of other classes. This is like training a man to become an athlete while neglecting his biceps. If, in educating men, I leave their heads weak, they will not know the very thing that matters most. This is how things stand.
Source: Rudolf Steiner – GA 348 – Health and Illness: II: Illnesses Occurring in the Different Periods of Life – Dornach, October 24, 1922