[MA-15]
NO INTERNAL AND EXTERNAL IN THE WORLD
As Democritus transferred the concepts "above" and "below" to endless space where they have no sense, so philosophers in general have transferred the concepts "Internal" and "External" to the essence and appearance of the world; they think that with deep feelings one can penetrate deeply into the internal and approach the heart of Nature. But these feelings are only deep in so far as along with them, barely noticeable, certain complicated groups of thoughts, which we call deep, are regularly excited; a feeling is deep because we think that the accompanying thought is deep. But the "deep" thought can nevertheless be very far from the truth, as, for instance, every metaphysical one; if one take away from the deep feeling the commingled elements of thought, then the strong feeling remains, and this guarantees nothing for knowledge but itself, just as strong faith proves only its strength and not the truth of what is believed in.