Holy Wisdom is collection of ascetical treaties written by Fr. Austin Baker, a well-known Benedictine mystic and an ascetic writer. These treatises were methodically collected by R.F. Serenus Cressy. Baker advises Christians to live an internal life with God as their guide, describing the process of mortification, by which the ascetic person strengthens the will to overcome the desire for sin.In conclusion, Baker's belief is that the continued practice of holy exercises draws Christians close to God.

Fr. Augustine Baker OSB (9 December 1575 – 9 August 1641), also sometimes known as "Fr. Austin Baker", was a well-known Benedictine mystic and an ascetic writer. He was one of the earliest members of the English Benedictine Congregation which was newly restored to England after the Reformation.