A humble person never behaves like a teacher; he will listen, and, whenever his opinion is requested, he responds humbly. In other words, he replies like a student. He who believes that he is capable of correcting others is filled with egotism.
One needs to be obedient in everything and to not believe in his own capacities.
It is much better to learn than to teach, much better to listen than to speak.
Many times when someone speaks one will repent of doing so, if however one learns to keep his mouth closed – never!
Based on Saint Paisios the Athonite, Saint Arsenius the Great and Saint Isaac the Syrian