Probably because not everyone can be recognized by their superior but everyone can recognize themselves. It helped make macbeth seem better than if he said "oh i was great"
I was convicted of a crime and I was taken into a trial with a judge, jury and I was trying to justify the actions I partook in. I claimed that two witnesses at the event had committed perjury and I proposed a fair alibi. My road to justice had been blocked by the judicial decision to mark me as guilty. Their jurisdiction offended me, as they clearly had some racial bias that I was a victim to, I strongly believe that my trial was not just.
