I haven’t read Endurance (it’s on the list!) but was deeply impressed by this quote from a fellow explorer:

“For scientific discovery, give me Scott; for speed and efficiency of travel, give me Amundsen; but when you are in a hopeless situation, when you are seeing no way out, get down on your knees and pray for Shackleton.”

Sir Raymond Priestley

What a leader must Shackleton have been!