Qui desiderat pacem, preparet bellum.
"Who desires peace should prepare for war."

Vegetius De Rei Militari III

"To be prepared for War is one of the most effectual means of preserving peace."
President George Washington
first annual address to Congress, January 8, 1790

"If we desire to avoid insult, we must be able to repel it; if we desire to secure peace, one of the most powerful instruments of our rising prosperity, it must be known, that we are at all times ready for War."
President George Washington
fifth annual address to Congress, December 13, 1793

"Live free or die."
official motto of the State of New Hampshire

In pace, ut sapiens, aptarit idonea bello.
"In peace, as a wise man, he should make suitable preparation for war."
Horace