If they want peace, nations should avoid the pin-pricks that precede cannon shots.
If we have no peace, it is because we have forgotten that we belong to each other.
It is an unfortunate fact that we can secure peace only by preparing for war.
John F. Kennedy
It is easier to lead men to combat, stirring up their passion, than to restrain them and direct them toward the patient labors of peace.
It is madness for sheep to talk peace with a wolf.
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.