How I teach my sons:

I want them to respect others just like they wanted to be respected themselves. I don't want them to shy away from debating and discussing with others in the event of different opinions. Sharing different opinions is good, it improves mutual understanding. In many cases, different sides may not be able to come to agreement. I want my sons to know that all that is acceptable because people are born differently. I want them to raise disagreement with reasons, good reasons even if other side may not see it or agree to it. I want them to accept good reasons that others may raise.

The last thing I want my sons to do is mocking others to try to boast self-confidence. Self-confident can't be raised that way. We as human, sometimes, feel hard to accept others due to our own ego. It's an animal instinct to try to vent out sarcasm, derision or irony. But as we get more educated, we'll find out that this doesn't work. I want my sons to understand that too. I want them to control their animal instinct and learn from Aristotle: "Virtue is a habit". Speaking with reasons is a virtue.