The spiritual world is – as I have frequently stated here – not somewhere in a kind of unreal dream world, it is also present wherever the sensory world is; It penetrates, permeates this world; and wherever activities are visibly present, they are initiated by supersensible, spiritual activities. […..] The soul lives in the supersensible world before it is born, or rather till conception, it lives in the supersensible world and it stays connected to the spiritual world in this life. The soul is present in supersensible worlds not decades, but centuries before it enters earthly existence.
Source (German): Rudolf Steiner – GA 72 – Freiheit Unsterblichkeit Soziales Leben – Basel, 18th October 1917 (page 47)
Translated by Nesta Carsten-Krüger