Peace

"Let him who desires peace prepare for war."
-Flavius Vegetius Renatus (~375 AD), De Rei Militari

"First keep the peace within yourself, then you can also bring peace to others."
-Thomas a Kempis (1380 - 1471), 1420

"If you want to make peace, you don't talk to your friends. You talk to your enemies."
-Moshe Dayan (1915 - 1981)