An answer to my question about how to deal with my son

1. Learning all the time. No lessons.
2. Say what is true for that second or even don't say that.
Not to bother whether feelings are hurt.
Act for spur of the moment.
No confrontation.
Quote from the Mother: 

I will say you are wrong.

You bloody well are not upbringing anybody.
Becoming responsible for another's behaviour projected into the future.