Alan Bradley said this quote

Giving someone the benefit of the doubt is not so simple as it sounds. What it means, in fact, is being charitable--which, as the vicar is fond of pointing out, is the most difficult of the graces to master. Faith and hope are a piece of cake but charity is a Pandora's box: the monster in the cistern which, when the lid is opened, comes swarming out to seize you by the throat.