One of my favorite Star Trek quotes, by one of my favorite Star Trek characters.
Star Trek: Deep Space Nine: The Siege of AR-558 (#7.8) (1998) Quark: Let me tell you something about Hew-mons, Nephew. Theyre a wonderful, friendly people, as long as their bellies are full and their holosuites are working. But take away their creature comforts, deprive them of food, sleep, sonic showers, put their lives in jeopardy over an extended period of time and those same friendly, intelligent, wonderful people... will become as nasty and as violent as the most bloodthirsty Klingon. You dont believe me? Look at those faces. Look in their eyes.
Exactly!