most important thing of cos is if you dun wan him to learn undesirable thing....do not show him..... parents' behavious is very important.....children see children do..
this is absolutely true....best is children is raised in enviornment of love...not quarrels...
it will be most beneficial for their life in the future...not to say they will succeed very well or not, but in term of quality of life, at least their heart is more at peace with this world and not have a "distorted, negative" view..... just humble thought.
