The ‘cipher’ is what marks the impossibility of each certainty and opens up to the further sense that is symbolic experience; like the symbol, the ‘cipher’ ‘breaks up’ the fixed meanings in favour of an as yet unknown dimension
Drawing on Jaspers via Aversa, this passage constitutes the most theoretically developed treatment in the corpus, positioning cipher as the threshold-concept that annuls fixed meaning and inaugurates genuinely symbolic experience.
, Active Imagination in Theory, Practice and Training, 2017thesis