Cardiphonia: or the Utterance of the Heart: In the Course of a Real Correspondence ? the Letters Complete and UnabridgedThe complete letters of John Newton are presented in Cardiphonia: together, they constitute compelling treatises of faith and spiritual wisdom. Newton was born in the early 18th century: a time when slavery was legal and actively practiced in the West. His initial chosen career of sailing led him to enlist with the British Royal Navy, where he was put to work on vessels carrying slaves across the oceans to be sold into lifelong servitude and