“Would you tell me, please, which way I ought to go from here?”
“That depends a good deal on where you want to get to,” said the Cat.
“I don’t much care where—” said Alice.
“Then it doesn’t matter which way you go,” said the Cat.
“—so long as I get somewhere,” Alice added as an explanation.
“Oh, you’re sure to do that,” said the Cat, “{if you only walk long enough.}”

“Come on, man, you gotta sacrifice your life. I'm not asking you to do anything I wouldn't do.”
You? You'd sacrifice your life for the good of the crew?!
"No, I'd sacrifice yours."