All war depends upon it
I came across this image of Jean-Christophe Lafaille taken on the 1992 expedition to Annapurna.
The body language and expressions reminded me of the line by Ronald Spiers in Band of Brothers, "The only hope you have is to accept the fact that you're already dead. The sooner you accept that, the sooner you'll be able to function as a soldier is supposed to function: without mercy, without compassion, without remorse. All war depends upon it." Only in climbing that lack of mercy, compassion and remorse is directed at yourself in the short term but the ones who love you most of all.
Beghin would go on to die on the expedition when a rappel anchor failed, and he fell thousands of metres, taking the ropes with him, leaving Lafaille to make perhaps the greatest self-rescue ever undertaken, only to die on a solo, Winter attempt at Makalu in 2005.