You merely cannot win an argument. It’s pointless to even try to win an argument. Why?, because even though you may win the argument verbally, you will not win the good will of the other person.
The thing is that arguments come about from the most simplest of things. The things are so trivial. I also believe that you can measure the size of a person by what makes him or her angry. Give your opponent the chance to express their view. Let them make their point. Do not interject, judge or condemn. This only raised barriers between the two of you.
Try to build bridges of understanding. Don’t burn bridges. The power of life and death is in your tongue. So may people do not speak today because of stupid trivial arguments in the past..
You always be the one to seek the higher ground by being sympathetic and compassionate..