Do not think that another person wishes to be corrected by you, be he wise or foolish, older or younger, as soon as one takes the step to correct a person one so to speak does violence to his pride, his ego, and by doing so upsets his right thinking. There are ways of doing things the wiser. The more beautifully he accomplishes his purpose, if one has to be humble in doing it beautifully, if one has to bend instead of wishing the other person to bend it really matters very little. Criticizing a person, accusing a person of his fault is no less than slapping him in the face, perhaps worse.