On the 800-mile return trip of Robert Falcon Scott’s unsuccessful attempt to be the first to reach the South Pole, his team desperately slogged through freezing temperatures and blizzards, trying to stay on schedule and reach the supply depots along the way. Oates’ feet were badly frostbitten, and he was slowing down the rest of the men. He volunteered to be left behind, but his comrades refused to leave him. So finally he simply walked outside his tent and into a blizzard, telling the others, “I am just going outside. I may be some time.”
Check out more famous last words over at the Art of Manliness.