​“The time will come... when quite different tendencies will come up at a congress like the one held in 1912, and people will say:  It is pathological for people to even think in terms of spirit and soul. ‘Sound’ people will speak of nothing but the body. It will be considered a sign of illness for anyone to arrive at the idea of any such thing as a spirit or a soul.

People who think like that will be considered to be sick, and you can be quite sure of it, a medicine will be found for this. The soul will be made non-existent with the aid of a drug.

Taking a ‘sound point of view,’ people will invent a vaccine to influence the organism as early as possible, preferably as soon as it is born, so that this human body never even gets the idea that there is a soul and spirit... Materialistic physicians will be asked to drive the souls out of humanity.”

“. . . I have told you that the spirits of darkness are going to inspire their human hosts, in whom they will be dwelling, to find a vaccine that will drive all inclination toward spirituality out of people’s souls when they are still very young, and this will happen in a roundabout way through the living body.

Today, bodies are vaccinated against one thing and another. In the future, [they] will be vaccinated with a substance which it will certainly be possible to produce, and this will make them immune, so that they do not develop foolish inclinations connected with spiritual life."

- Rudolf Steiner; 1917 (Scientist, Philosopher)