Bab 1101: Clash Of The Titans.

The fountain of life was taken aback by what he said and the question he asked. It eyes narrowed at Ragnarok. Then it said, "You know too much. I am now sure that you are working with the demon god. Only it and the Will of the plane know what I am and what I want to acquire in the plane. Your enmity with CARNAGE has just been pretense. I must admit that it is a good plan. The two of you fooled me. But your schemes end here."

"It seems we must fight." Ragnarok agreed with a glint in his eyes.

He didn't try to explain himself to the fountain of life. Any chance of negotiation has gone out the window. They will fight. 

Actually, he is willing to negotiate for peace with the Fountain of Life. After all, his goal is to destroy the plane and not fight the fountain of life. But the fountain of life wants him dead now that he knows its aim in the plane.