Jack London's "Instinctive Mysticism"

In his 1974 book, Jack London, Earle Labor spoke of the "instinctive mysticism" that dominates London's tales of the north country. Here is a famous passage from the short story "White Silence":

The afternoon wore on, and with the awe, born of the White Silence, the voiceless travelers bent to their work. Nature has many tricks wherewith she convinces man of his finity--the ceaseless flow of the tides, the fury of the storm, the shock of the earthquake, the long roll of heaven's artillery--but the most tremendous, the most stupefying of all, is the passive phase of the White Silence. All movement ceases, the sky clears, the heavens are as brass; the slightest whisper seems sacrilege, and man becomes timid, affrighted at the sound of his own voice. Sole speck of life journeying across the ghostly wastes of a dead world, he trembles at his audacity, realizes that his is a maggot's life, nothing more. Strange thoughts arise unsummoned, and the mystery of all things strives for utterance. And the fear of death, of God, of the universe, comes over him--the hope of the Resurrection and the Life, the yearning for immortality, the vain striving of the imprisoned essence--it is then, if ever, man walks alone with God.