The Power of Words
I hope no one truly underestimate the power of words. For example, the power of a compliment vs. the power of a complain.
A compliment can heal a person's character that making him/her feel encourage to do more or feel reinforce that their methods or ways isn't doing no harm and/or helping others.
A complains can hurt a person's character that making him/her uneasy or feel like they done a disservice to someone or something. It can definitely show that something went wrong and that something needs to be corrected.
Words can destructive and hateful or it can kind and pleasant or it can be something in between. Those words can effect people in many ways. Keep in the mind the words don't effect the physical body, but the effects happen in a more sensitive spot, the mind, where the damage can't be physically seen but its pain can be felt just like being hit by a punch.
Watch your words. It can be powerful.