Sometimes, does it simply boil down to doing the right thing, no matter how irritated you are?
Lets say A told you that B has been abusing you constantly in a public forum. Do you abuse B or do you actually go talk to B and ask him what his problem is? Or do you do neither and just forget about it until B faces you?
If something bad happens to B and you actually feel sorry for the guy, does that basically mean that you have learnt to grow beyond things in a certain way? Is that maturity?