The fact that the dead live in the spiritual world does not necessarily give them knowledge of the world, although they can see it. The knowledge which can be acquired through Spiritual Science can only be acquired on earth; it cannot be acquired in the spiritual world. If, therefore, the beings in the spiritual world are to possess it too, they can only gain it from the beings still on the earth. That is an important secret of the spiritual worlds. We may live in them and be able to perceive them, but the necessary knowledge concerning these worlds can only be acquired on earth.
Source: Rudolf Steiner – GA 140 – Descriptive Sketches of the Spiritual World: Lecture I – Bergen, 10th October 1913
Translated by Harry Collison
Previously posted on February 17, 2015