An icebreaker
A 16th-century Spanish friar wrote of a 'dark night' in which God strips away every comfort so the soul can love without expecting reward. The phrase now gets used for depression and hard times — a separate, modern meaning he never described.
Imprisoned by opponents of the Carmelite reform in 1577, he composed poetry in a Toledo cell, and later wrote prose commentaries on the Dark Night poem describing purification as the path to union with God.
After meeting him in 1567 she drew him into extending the Discalced reform to the friars, wrote her own accounts of prayer and union, and valued him as a spiritual director for her nuns.
Drawing heavily on his writings in his own books on contemplative prayer, he treated detachment from all lesser attachments as the discipline that opens a person to God.
In a 2004 book drawing on John's and Teresa's writings and his own clinical experience, he argued the dark night is a hidden transition toward freedom, not the same thing as depression.