Richard Holloway writes Doubts and Loves: What is Left of Christianity (2020,)

The genius of Buddhism is it is a Middle Way that repudiates two extremes, the worthless life of self-indulgence and the equally worthless life of self-torture. The difference between Buddhism and Christianity is that Buddhism is essentially a practice, an arduous discipline that can deliver peace and compassion to its adherents. Christianity also has its spiritual disciplines, but it has never able to divest itself of the belief that doctrines are themselves saving and life-changing. Much of this goes back to the originating genius of Christian theology, Saul of Tarsus who became Paul. The paradox is that what was for Paul a liberating psychological experience was later to be hardened into a formula that radically contradicted his original insight and the experience that prompted it.