Sources and the Sayings Tradition
The fuller record of the two saints comes from the Greek Apophthegmata Patrum, where sayings are attributed to each. A saying assigned to Karion reflects on the difficulty of his situation: 'A monk who lives with a boy, falls, if he is not stable; but even if he is stable and does not fall, he still does not make progress.' The tradition also reports Karion's own admission that, although he undertook more physical labor than his son, he had not attained Zachariah's humility and silence.
Zachariah's sayings center on self-discipline and humility. Asked what makes a monk, he is reported to have answered that a monk is one 'who does violence to himself in everything,' content with bare necessities and nothing more. On another occasion he removed his monastic hood, placed it beneath his feet and trampled it, saying, 'The man who does not let himself be treated thus, cannot become a monk.'