Try to Remember — Frank Herbert

The science language―an overly-neglected field for the extrapolations science-fiction―is put brilliant use in this powerful story. Against a background ultimate peril from a galactic invader, man (in this case, woman) back beyond Babel to recall for humanity the places the soul, where words are not enough.
Would the similarity between the gestures of an Arab dancer and those of the dread Galactic invaders help to break the communication barrier before it was too late?