The paper deals with the reinterpretation of Wolfgang Pauli's 'cognitive revolution' of imagination and hermeneutical explanation cooperating with C.G. Jung. In the identification of the creative unconscious background processes (a concept introduced by Pauli himself) found in the dreams, imaginations and interpretations of Pauli and Jung, the number-archetypes, structures, patterns and meanings seem to be related to the hidden world of the great monarch Constantine Porphyrogenitus and his 'followers'.