Nothing truly good is ever beyond the realm of possibility. This is not simple optimism. It is not a denial of reality, or even a repainting of reality. Jesus did get crucified, after all. No one who knows that fact can assume that the world will automatically honor goodness.
Bad things do happen to good people.
But still, there is now this window in the spirit. The window is a question mark. They see, through eyes that you and I hardly know we have, a promise which we would hardly know how to receive. When the window is open, a new day is full of new questions and new possibilities. No situation which is brought into a room with this window can ever be viewed in the same way again.