The devastating effect of lies

We all know the deep significance of the statement: “Regarded from the spiritual-scientific aspect a lie is a kind of murder.” I have explained that a sort of explosion really takes place in the astral world when man utters a lie — even, in a certain way, if he only thinks it. Something takes place in the spiritual world when man lies, which has a far more devastating effect for that world than any misfortune in the physical world.

Source: Rudolf Steiner – GA 102 –THE INFLUENCE OF SPIRITUAL BEINGS UPON MAN – Lecture X – Berlin, 4 June 1908