The Essence of Anthroposophy
If you continue such exercises — they require a lot of patience and perseverance, because anthroposophical research is no easier than research in any field of external science — you will eventually notice how your thinking has become more intense, more vigorous, more powerful. And one arrives at developing within oneself what can be described as a kind of first step on the path to supersensible knowledge, and what I have called — names must be there, one must not be offended by them — imagination. One gradually learns to live completely, as otherwise in the world of the senses, in an inwardly intensified thinking.
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