The anonymous author of The Cloud of Unknowing has penned a masterpiece in Christian mysticism. The author understands and builds off of the concept that God is infinite and therefore hid from us as finite. He encourages his pupil to meditate on God realizing that in meditating God’s love will envelope the person as a cloud. This cloud separates the individual from concerns and stresses as it unites with God. This can be a complex idea and it is probably best for a person to have read other devotional literature before tackling it. However, this is a masterful resource and can help those wanting to overcome the stress of the world around. I would also recommend buying a critical edition so the reader can benefit from a solid introduction; I especially like the “Classics of Western Spirituality” or “Penguin Classics” editions.