Leaves of Morya's Garden - Book 2 - Illumination (1925) - 2.8.10: 2.8.10. Now about the circles of receptivity. The circles of keen sight proceed centrifugally and those of receptivity proceed centripetally. From symbols and dim outlines they advance spirally to sharp fact, to claircall, clairaudience, clairvoyance, clairunderstanding, clairachievement, clairknowledge.