I gladly believe that today those people who feel the urge to experience something of the spiritual world would prefer if one could teach the ability of perceiving the spiritual world while one imposes them mystically or as the case may be. Some people believe this. Nevertheless, it is not that way. What opens the spiritual world to us is inner soul work. This inner soul work really leads to that which I have indicated. The human being who changes his soul into an organised soul knows that his soul gets free from the body, when pushing against the spiritual and perceives the spirit.
Source: Rudolf Steiner – GA 72 – The Human Soul in the Supersensible Realm and Its Relationship to the Body -Basel, 18 October 1917
Rudolf Steiner and Annie Besant