Like justness in a judge's decision, or beauty in a painting, soul is a quality of absoluteness in something relative. Understood profoundly, people are connected to the holiness of the world in such a way that they reveal a dimension of holiness in themselves, a dimension of depth that is absolute.
To be on journey is to love your life enough to change it, to choose struggle instead of exile, to risk everything with only the glimmering hope you are on the right path.