Truth without humility is blind. That is why it becomes contentious: it tries to support itself on something, and finds nothing except rancour.
It is best not to go astray at all. Second best is not to hide your error through shame, or be shameless about it, but to humble yourself and, when reproved, to reprove yourself likewise, gladly accepting the punishment. If you do not do this, everything you offer to God is valueless.
In addition to voluntary suffering, you must also accept that which comes against your will–I mean slander, material losses and sickness. For if you do not accept these but rebel against them, you are like someone who wants to eat his bread only with honey, never with salt. Such a man does not always have pleasure as his companion, but always has nausea as his neighbor.
~Ilias the Presbyter