Worse Than Pelagianism

"To believe in the power of man in the work of regeneration is the great heresy of Rome, and from that error has come the ruin of the Church. Conversion proceeds from the grace of God alone, and the system which ascribes it partly to man and partly to God is worse than Pelagianism" (The Reformation in England (London, 1962), Vol. 1, p. 98)