" So then, why does one person believe and another person doesn’t? Pelagius would say it’s because man has options: to embrace Christ or not to embrace Him; to obey God or not. It is within the power of a human being to obey God at every turn without any assistance from God’s grace. But Augustine would say man is dead in his sins. He has no desire for Christ, and the only way he will ever choose Christ is if God softens his stone-cold, recalcitrant heart and puts in him a desire for Christ. "

― R.C. Sproul , Are People Basically Good? (Crucial Questions, #25)