When you realize you have to let go of the anger or you will never be able to heal and move forward.

 “I think too many people presume to read the divine Scriptures and fall into such terrors as this,' said Patricius sternly. 'Those who presume on their learning will learn, I trust, to listen to their priests for the true interpretations.'

The Merlin smiled gently. 'I cannot join you in that wish, brother. I am dedicated to the belief that it is God's will that all men should strive for wisdom in themselves, not look to it from some other. Babes, perhaps, must have their food chewed for them by a nurse, but men may drink and eat of wisdom for themselves.”

― Marion Zimmer Bradley, The Mists of Avalon