Whoever will experience the true character of cosmic mysteries must stand entirely on the standpoint from which he says: Whoever still heeds his own opinion, cannot come to Truth. That is indeed the peculiar [eigenartige] nature of anthroposophical truth that the observer may have no opinion of his own, no preference for this or the other theory, that he may not love this or the other view more than any other because of his own especial individual qualities.
As long as he stands on this standpoint, it is impossible for the true secrets of the world to reveal themselves to him. He must pursue knowledge quite individually, but his individuality must develop so far, that it no longer has anything personal, i.e., anything of his own peculiar sympathies and antipathies. This must be taken strictly and earnestly. Whoever still has any preference for these or the other ideas and views, whoever can incline to this or the other because of his education or temperament, will never recognise objective truth.
Source: Rudolf Steiner – GA 117 – The Ego: Lecture One – Munich, December 4, 1909
Translated by Gilbert Church