Many people doubt that Anthroposophical truths support and carry each other, and that they don’t have to be supported by outer observations and experiments.
As soon as one sees that Anthroposophical truths are valid because they all support each other, so that the truths mutually support each other, in that moment one will stop saying: I can’t see anything in the spiritual world yet and therefore I can’t understand the content of Anthroposophy. Instead one will begin to understand Anthroposophy through the fact that its truths mutually support each other, and one will then work one’s way further into it.
Source: Rudolf Steiner – GA 346 – LECTURES TO PRIESTS: THE APOCALYPSE: Lecture III – Dornach, 7 September 1924
The great Rudolf Steiner Quotes Site 