[Protagoras]

Good questions. If you do not define morality by God's laws, then it is truly up to the individual to define it. Without God, there is no "right" and "wrong", "good" and "evil". Everything would be culturally relative.

We agree.

[Bryher1]

There will probably be no occasion for just or courageous acts in the next world, but there will be every occasion for being the sort of people that we can become only as the result of doing such acts here. The point is not that God will refuse you admission to His eternal world if you have not got certain qualities of character: the point is that if people have not got at least the beginnings of those qualities inside them, then no possible external conditions could make a 'Heaven' for them.

-- C.S. Lewis again, from "Mere Christianity"