He had done as his dreams had told him, but dreams know more than they reveal

--- Neil Gaiman, in the Chapter "The Children of Loki" of his Norse Mythology (2017), p. 96.

In context:

Odin took the serpent to the shore of the sea that lies beyond all lands, the sea that circles Midgard, and there on the shore he freed Jormungundr, and watched it slither and slip beneath the waves and swim away in loops and curls.

Odin watched it with his one eye until it was lost on the horizon, and he wondered if he had done right thing. He did not know. He had done as his dreams had told him, but dreams know more than they reveal, even to the wisest of the gods.