Read it through once

It seemed an over-nice distinction, but nobody said anything. If we had known her as well as she knew herself, and as her later history revealed her to us, we should have perceived that she had a clear meaning there, and that her position was not identical with ours, as we were supposing, but occupied a higher plane. She would sacrifice herself—and her best self; that is, her truthfulness—to save her cause; but only that; she would not buy her life at that cost; whereas our war-ethics permitted the purchase of our lives, or any mere military advantage, small or great, by deception. Her saying seemed a commonplace at the time, the essence of its meaning escaping us; but one sees now that it contained a principle which lifted it above that and made it great and fine.