I've just been banned by Facebook because of this article. They just proved my point.

"You hurt, even if you are silent”

Father Porfiry said: “When people are angry and indignant, then, even if they restrain themselves and do not say anything, from them, that is, from the evil that is within them, a certain evil force emanates,which has a detrimental effect on others. Parents have a negative influence on their children when, seeing that they do not obey them, they get irritated, but restrain themselves and do not say anything. They think: "In order not to injure the child, I will not say anything to him now. " How would they know that their pent-up resentment is in fact a sword that inflicts a mortal wound! Can you hear what I'm telling you? Mortal wound! You, even without uttering a word, can kill your neighbor to death. Our soul is not material, and therefore it is really affected by various spiritual forces, both good and evil. "
When a person asked the Elder about the difficulties of communication at his work, he gave him the following advice:
“Never think badly of others. By your prayer, by your conversion to Christ, you have a beneficial effect on your neighbors. Thinking badly about people, you influence them negatively. " - St. Porphyrios