It is apparent that blind faith as well as the crassest superstition is quite widespread. Therefore there are hardly two matters more connected with one another than spiritual science and charlatanism. If one is unable to distinguish the one from the other, if one accepts an authority in blind faith, as is so often the case these days when the expertise of another is accepted forthright, then one actually promotes the kind of quackery that is so often associated with spiritual science. This is rightly criticised by people in search of genuine truth. It is understandable that someone who is not in the position to distinguish between the quack and the true spiritual authority objects that it is all charlatanism.
Source (German): Rudolf Steiner – GA 62 – Ergebnisse der Geistesforschung – Berlin, October 31, 1912 (p. 34)
Translated by Nesta Carsten-Krüger