People who do not understand themselves have a craving for understanding — a thing which is rather surmised and never spoken than known and clothed in words.
Ruthven surmised that he had hit upon some of the central deceptions which had wrecked him and reduced him and so many of his colleagues to this condition. To surmise was not to conquer, of course; he was as helpless as ever but there was a dim liberation in seeing how he had been lied to, and he felt that at least he could take one thing from the terrible years through which he had come: he was free of self-delusion.barry malzberg
Since then 'tis Centuries and yet Feels shorter than the Day I first surmised the Horses' Heads Were toward Eternity
It was first surmised by the ancient philosopher, Democritus , that the faintly white zone which spans the sky under the name of the Milky Way, might be only a dense collection of stars too remote to be distinguished. This conjecture has been verified by the instruments of modern astronomers.