Before coming into touch with the anthroposophical world-conception one would probably have laughed and made merry over such ideas, and most certainly the majority of our contemporaries would make merry over them. This sum of feelings and sensations to which we gradually accustom ourselves is far more important than the details of anthroposophical teachings and theories.
For, little by little, we actually become different through acquiring these feelings towards those other worlds which are continuously pulsing through our world imperceptibly to our senses. People who have such feelings, who take this attitude to these other worlds, are those who in this case may be called “advanced anthroposophers.”
Thus an appeal is made to your heart, your feeling nature, and not to your theoretical knowledge. What the heart and feelings have absorbed constitutes the advancement we need if we are to accept freely and without prejudice the statements contained in recent lectures and in a certain way in the lecture to be given today.
Source: Rudolf Steiner – GA 102 – The Influence of Spiritual Beings on Man: Lecture VIII – Berlin, 16th May, 1908