APL QUOTE

 "Don't raise your voice, improve your argument
~Desmond Tutu
      I think the quote means that when you discuss something  with someone else, you should not scream or shout, you should only speak with a calm assertive  voice. I wonder who is Desmond Tutu, because he sounds wise. I think the quote is good, because it would help  you through life and it helps people not to get mad at you.