Esoteric Lesson
This front mark is, of course, only present in the etheric-astral realm and can only be formed through meditation and concentration. That is why they are the most important thing for our esoteric development. And the only thing that is directly harmful to the esotericist is the consumption of alcohol. Alcohol must be avoided at all costs. It is of course good if we support the process through a vegetarian diet, because this lifting of the etheric body is by no means easy nowadays. Many of our modern professions are directly designed to drive the etheric body firmly into the physical body, so that it can often cause direct pain to the clairvoyant when he sees something like this. Even the food served in our large hotels today is designed to drive the etheric body firmly into the physical body.
Cite:
GA 266b/1910-12-31/p007 · edition English