We must know that every manifestation of melancholy in a human being is connected with some irregularity in the function of the liver. This may seem unlikely to the physicist, but it is nevertheless a fact that every kind of melancholy, especially if it goes so far in a child as to become pathological, is due to some irregularity of this kind. In such a case I shall turn to the parents of the child and say: “It would be good to put more sugar in his food than you usually do.” He needs sweet things, for sugar helps to normalise the function of the liver.
Source: Rudolf Steiner – GA 310 – Human Values in Education: Lecture VII – Arnheim, 23rd July, 1924.
Translated by Vera Compton-Burnett