Recently, I have been teaching my son some basic courtesy by saying "Please", "Sorry" and "Thank you". However he only progresses to say "Please" and he does it with ease. Occasionally, he will say his version of "Thank you" but never the "Sorry". I guess that is just human behaviour, because "Sorry" is the hardest word to say.
Oh well, I cannot blame him for not saying "Sorry", even adults cannot say them. Even the for the most heinous crimes, for example those happened in WW2, not even a sincere "Sorry". So what rights have we as an adult to teach our children on good manners? Reflect on this!