Not only is the universe stranger than we imagine, it is stranger than we can imagine.

Though sometimes attributed to Eddington without citation, this seems to be derived from a statement by J. B. S. Haldane, in Possible Worlds and Other Papers (1927), p. 286: The Universe is not only queerer than we suppose, but queerer than we can suppose.

The universe is not only stranger than we imagine, it is stranger than we can imagine. The world is not only stranger than we imagine, it is stranger than we can imagine.