St Basil was a towering figure in the fourth-century Church. In the midst of great controversy, he led the charge of those faithful to the doctrine proclaimed at Nicaea. Here, St Basil lays out a consistent theological ethic, rooted in a nuanced appreciation for the supremacy of Scripture. These texts, presented with the Greek on the facing page, are essential reading for anyone interested in early Christian approaches to ethics as well as the right use and interpretation of the Bible.