William Law was one of the great mystics, clerics, and educators of the Church of England. Born in 1686, he was educated at Cambridge, eventually taking a teaching position there in addition to being ordained in the Church of England. He lost his position at Cambridge for being a Non-Juror (the Church of England being a state religion, clerics and others are required to swear oaths of allegiance to the monarch, and this Law could not do with regard to George I). He wrote the first work, A Serious Call to a Devout and Holy Life', one of his best-known works, while in retirement as tutor in the Gibbon household (he was tutor to the father of the historian noted for the work on the Decline and Fall of the Roman Empire) in the 1720s.. He wrote the second, much shorter work, The Spirit of Love, ' in 1750s. The first is a major work of spiritual practice, rightly deserving the description as a classic' or masterpiece'. For a course we teach at my seminary, this book is on the list of spiritual classics one may choose to use for inspiration and spiritual reflection, and for good reason. Influenced by Law's readings from other mystics such as Thomas a Kempis, Johann Tauler and others, this book is full of mystic insight and practical wisdom. It was popular from the start, and remains an enduring classic of post-Reformation spirituality