It is not for nothing, not futile that the anthroposophical movement has reminded people of the invisible worlds, of which they are a part, on which they always exert influence. A person can’t utter one single word, can’t have a thought, without their feelings influencing the environment. In the same manner that our actions cause an effect in space, so do our emotions; they travel through space and influence people and the entire astral world.
Under ordinary circumstances, the human being is not aware that a stream of action goes out from him, that he is a cause whose effects can influence the environment. He is not aware that this can also cause harm, that he sends streams of sympathy and antipathy, of passions and desires into the world, which can work on other people in a very harmful way. He is unaware of what he is bringing about with his emotional life.
Source (German): Rudolf Steiner – GA 88 – Über die astrale Welt und das Devachan – Berlin, October 28, 1903 (page 27)
Translated by Nesta Carsten-Krüger