by St. Symeon the New Theologian
Just as we recognize the different nations by their clothing and most people by their voice and speech, just so then do we recognize the saints by, on the one hand, their decency and attractive behavior and other outward sign; but it is their speech, on the other hand, which truly and accurately reveals their identity. What the heart does not have, the mouth is unable to produce.
from On the Mystical Life
