So many people take care if they have seen into a worldview so that they are convinced of it to convincing also other people. They believe that it is a very creditable endeavour if they say, because I understand it so clearly, nevertheless, I should be able to convince everybody. However, this is naive. Our opinions do not depend at all on whether to us something is proved logically. This is possible in the fewest cases.
Since the opinions and convictions are formed from quite different subsoil of his soul — from his will nature, from his mood and feeling nature, so that someone can understand your logical discussions, your astute conclusions very well. Nevertheless, he does not at all accept them because that what a human being believes and what he confesses does not flow from his logic and his understanding, but from the whole personality, that is from those members, where the will, where the mood arise.
Source: Rudolf Steiner – GA 60 – Predisposition, Talent and Education of the Human Being – Berlin, 12 January 1911