Pope Francis
You ask me if the God of the Christians forgives those who don't believe and who don't seek the faith. I start by saying—and this is the [most important] thing—that God's mercy has no limits if you go to him with a sincere and [truly sorry] heart. The issue for those who do not believe in God is to obey their conscience. Sin, even for those who have no faith, exists when people disobey their conscience.