The true being do not go around bullying other people.
We don't use our skills to intimidate others, belittle others, or become abusive in any way. We don't treat others with disrespect, hate, or a better-than-thou attitude.
All of these things are below him, and at the same time, so is allowing others to treat him in these ways.
This doesn't mean that you have to constantly be in someone's face for not treating you right, but it does mean that you will require a certain amount of courtesy and respect from those you interact with.
It doesn't take much to treat others in a respectful manner; in general, people that are rude, go out of their way to be rude.
Rude behaviour towards anyone speaks to the rude person's own character.
While everyone is free to act and speak as he or she wishes, you are also free to not allow others to treat you in such a manner.
To quote Captain Woodrow Call,
"I won't tolerate rude behaviour."
When you truly make important principles a part of your life, you become one with them.
They aren't something separate that you conveniently use then you set aside when they are inconvenient; they are an essential part of who you are.
Therefore, once you know the value of your principles, if you allow yourself to lose them for whatever reason, you have lost an important part of yourself and will be unsettled until you get yourself back in balance.
Maintain your principles and your standards. Honour is not a temporary stepping stone; it is a lifelong part of your soul.
Don't lose it.
ps/smoh