How about this for a thought? Language as a weapon to influence your enemy in order to win an interstellar war! Samuel R. Delany used the concept of linguistic relativity (some refer to as Sapir-Whorf hypothesis) as a plot in his 1966 science fiction novel Babel-17. The novel was popular and was the joint-winner of the Nebula Award for Best Novel in 1967 together with Flowers for Algernon.