* Emphasize their divergence: The language difference is a stark symbol of the deep chasm that separates the Eloi and Morlocks. It signifies their physical and social evolution into distinct species, unable to even communicate. This emphasizes the theme of societal decay and the potential consequences of unchecked technological advancement.
* Highlight the Morlocks' mysterious nature: The Time Traveler's inability to understand the Morlocks' language adds to their unsettling and mysterious quality. They are shrouded in an air of secrecy and danger, making them all the more frightening to the reader.
* Create suspense and intrigue: The lack of communication between the two species fuels the narrative's suspense. The Time Traveler's struggle to decipher the Morlocks' intentions keeps the reader on edge, wondering what dangers lurk beneath the surface.
* Reflect the class divide: While not explicitly stated, the language barrier can be interpreted as a reflection of the class divide that existed in Wells's own Victorian society. The Eloi, living a carefree existence on the surface, could be seen as the upper class, while the Morlocks, toiling in the darkness, represent the working class. The inability to communicate between these groups mirrors the social and economic inequality of the time.
In summary, Wells's choice to give the Morlocks a different language is a deliberate and powerful literary device that adds depth and meaning to the narrative. It enhances the themes of societal decay, class inequality, and the consequences of unchecked progress, while also creating suspense and intrigue for the reader.