Helmut Thielicke

The doubters are always more blessed than the mere fellow travelers in faith. For they are the only ones who fully learn that their Lord is stronger than any doubt and any hell of despair.

I don't believe that God is a fussy faultfinder in dealing with theological ideas. He who provides forgiveness for a sinful life will also surely be a generous judge of theological reflection. Even an orthodox theologian can be spiritually dead, while perhaps a heretic crawls on forbidden bypaths to the sources of life.