Pelagius, pious Irish who had problem with Augustine's prayer: "Oh God, grant what Thou Commandest; and Command what Thou dost desire". The first part of the prayer means "grant me the grace to do your will."
Pelagius: "If God commands those to do what they are unable to do, God is not just."
This touches on issues of moral responsibility.
So, are we inherently good? Pelagians: "Yes, the original sin has not tainted us. Grace facilitates and helps us to do good, it is not a necessity. Jesus is a good moral example for us in our redemption."
Sproul on Pelagianism vs. orthodox doctrine (We are debtors we can't pay our debts ourselves):
Pelagian: We are either no debtors or we can pay our debts ourselves.