A quarrelsome person will create a situation to fight and invariably put fault in system or other persons. Neither he will be peaceful nor will allow others to be.
On the contrary a peaceful person will assess each situation meticulously before making a comment or action. He knows very well what are the moves not to be taken in order to maintain a peaceful atmosphere. The interesting thing is that even in an adverse situation he will remain composed and disciplined. Only those persons can achieve this who are really peaceful from their inner self and not pretending to appear so.
Knowledge is power.