what is the most memorable quote you heard during/after service?

It could be a quote from a military member or civilian leader about the military, an observation of a citizen, historic figure, or a quote of an adversary about our forces or even more ancient military quotation or observation. Over the years I've seen some great quotes about military personnel, military life, etc... what are some of your favorites? Please share quote and author (or who the quote is attributed to, if known). This should be a great time, so put on your thinking caps, and share your best military quotes/observations and related subjects. Let's have some fun and learn at the same time... see you all in the threads!