Offence

When you're arguing, you're trying to make your point. However there are still mistakes you shouldn't make:
Don't be offensive.
• There's a difference between playing offense and being offensive. As Abraham Lincoln said: "we should be too big to take offense and too noble to give it".
• Exhausting someone else in an argument isn't the same as winning.
• Speech can be sticky - sometimes what you say can stick around in people's minds for years, so be very careful with what you say.
• Let people speak: don't interrupt other people and let them make their points. This way you'll hear them and they'll give you the same due.