“Peace can not be kept by force; it can only be achieved by understanding.” Albert Einstein 

• ”Peace comes from within. Do not seek it without.” Buddha 
• ”Peace begins with a smile. Every time you smile at someone, it is an action of love, a gift to that person, a beautiful thing.”Mother Teresa.

…but…

It isn’t enough to talk about peace. One must believe in it. And it isn’t enough to believe in it. One must work at it.