Proof of the Immortality of the Soul.
“In a different but related vein, John of Morigny argues that the fact that future things are seen in divine visions is proof of the immortality of the soul, presumably because they witness the possibility of a visionary escape from the embodied dimension of time itself:
“Furthermore, the heresy of those who said and say that the soul is mortal is dismissed and condemned through diverse visions, since even in the absence of the body, future things are seen [in visions] as though they were present. But there is no way that this could be if the soul were not immortal.”
—-Claire Fanger, “Sacred and Secular Knowledge Systems in the Ars Notoria and The Flowers of Heavenly Teaching of John of Morigny,” p. 173.
Claire Fanger and Nicholas Watson: >>The Prologue to John of Morigny’s Liber Visionum<< (n. 2), l, 2.