Do Not Vilify --- Not Even Your Enemy

Swami Sivananda: When your friendship with some other person terminates through some slight rupture, quarrel or misunderstanding, you should never advertise and circulate the evil qualities or wrong actions of your friend, whom you loved for a long time. If you engage in this practice, it will bring harm to yourself as well as to your friend.

Drop the matter at once. Forget all about the unhappy incident. Always speak well of everybody. Speak well even of the man who has done serious injury to you. You will then help that man. This is nobility. This is the nature of a Mahatma. Even if you are a worldly man, you must endeavour to transform yourself into a sincere aspirant and a Mahatma in this very life.

Source: pg. 103, Daily Meditations by Sri Swami Sivananda [Sivananda Press, Durban]