It needs to be said over and over again: just as one does not need to be a painter to feel the beauty of a picture, so too one does not need to be a spiritual scientist oneself — although one can become one up to a point — to be able to test whether what I am saying here is true. Just as one can feel the beauty of a picture without being a painter oneself, so with ordinary common sense one can perceive what the spiritual scientist says about the soul.
Source: Rudolf Steiner – GA 83 – The Tension Between East and West: II: Psychology – Vienna, June 2, 1922
Translated by B. A. Rowley