When ¨The Endurance" could not handle it any more.
"If you do this, sir-I mean, when you do this, crossing all of Antarctica-people will know it's important."
"Ah." Shackleton warmed his hands on his pipe and stared out at the ice. his face was hard now, but his voice was quiet. "but it isn't, though. Not really"
"why do you do it, then, sir?"
"Why?" Shackleton turned back and smiled at Perce. "I don't suppose I'm good for much anything else."