When you have a time of crisis what happens depends on what ideas are floating around, and what ideas have been developed, and thought through, and are made effective.
They had stopped now and he gave a glance up at the sky, through the trees, as though to see how much time was left. Amber, watching him, was suddenly struck with panic. Now he was going--out again into that great world with its bustle and noise and excitement--and she must stay here. She had a terrible new feeling of loneliness, as if she stood in some solitary corner at a party where she was the only stranger. Those places he had seen, she would never see; those fine things he had done, she would never do. But worst of all she would never see him again.