Quotes capturing the essence of the United States Marine Corps (USMC) resonate with courage, duty, and esprit de corps. Below are significant and representative quotations:
Iconic Declarations
"Semper Fidelis." (Always Faithful) - The official motto of the USMC, embodying unwavering loyalty to the Corps and fellow Marines.
"The Marines have landed and have the situation well in hand." - Often attributed to Major Smedley Butler, highlighting readiness and capability.

On Marine Spirit & Ethos
"Retreat? Hell, we just got here!" - Attributed to Captain Lloyd Williams, USMC, during World War I, epitomizing defiance and tenacity.
"There are only two kinds of people that understand Marines: Marines and the enemy. Everyone else has a second-hand opinion." - General William Thornson (U.S. Army), acknowledging the Corps' unique culture.
"A Marine should be sworn to the patient endurance of hardship, like the ancient knights; and it is not the least of the necessary qualifications that he should be a detached and moody man, swift with his hand or his sword." - H.H. Heming, early chronicler.
"The deadliest weapon in the world is a Marine and his rifle." - General John J. Pershing.
On Readiness & Sacrifice
"Come on, you sons of bitches, do you want to live forever?" - Gunnery Sergeant Daniel J. "Dan" Daly, USMC, rallying Marines during WWI (Battle of Belleau Wood).

"Esprit de Corps: The common spirit inspiring enthusiasm, devotion, and strong regard for the honor of the group." - Defined as a core USMC value.
"Some people spend an entire lifetime wondering if they made a difference. The Marines don't have that problem." - President Ronald Reagan.
"The Marines I have seen around the world have the cleanest bodies, the filthiest minds, the highest morale, and the lowest morals of any group of animals I have ever seen. Thank God for the United States Marine Corps!" - Brigadier General (Ret), Honorary Marine) Lewis B. "Chesty" Puller.
On Leadership & History
"Marines...win. That's what they do." - Lieutenant Colonel Oliver North, USMC (Ret.).
"The Marine Corps...gives every man a title of dignity and a position of importance. Marine privates are the best I ever saw." - Major General James A. Ulio, U.S. Army.

"Send the Marines!" - A common historical refrain highlighting the Corps as the nation's force-in-readiness.
Reflective Core Principle
"Once a Marine, Always a Marine." - Expressing the enduring identity that transcends active service.