Anyone nowadays acknowledges that smacking someone with your hand is something very real, that it actually happens. But it is not so easily believed that it is just as real when I send someone a bad thought. We must be aware that the hostile thought that I send to my fellow human being, the thought of antipathy or hatred, is to his soul the same as a slap in the face would be. A negative feeling, a feeling of hatred and indifference with which I confront another person is in reality the same as a physical injury.
Source (German): Rudolf Steiner – GA 264 – Zur Geschichte und aus den Inhalten der ersten Abteilung der Esoterischen Schule 1904 – 1914 (page 373-374)
Translated by Nesta Carsten-Krüger
Previously posted on May 6, 2017
The great Rudolf Steiner Quotes Site 