Professor T.M.P. Mahadevan, head of the Department of Philosophy at Madras University, recognized instantly and delightedly the symbol painted on several Greek icons when I took him into the church belonging to an Orthodox monastery in Athens. It was, he exclaimed, "the gnana mudra," the gesture made by touching the tip of the forefinger with the thumb to form a circle. The inner meaning is that the ego (forefinger) is a continuation, a connection, or a unity with the Overself (the thumb). Only in appearance is it otherwise.
-- Notebooks Category 15: The Orient > Chapter 7: Related Entries > # 93
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