Known as the father of linguistics, Ferdinand de Saussure laid down the concept of semiotics. He distinguished between parole and langue, leading later thinkers to explore structuralism. His only book was his dissertation on vowels in Indo-European languages, with the rest being collections of his lectures.
Steven Pinker is a Canadian-American linguist, cognitive psychologist, and popular science author. He is also a supporter of the computational theory of mind and evolutionary psychology. His works have earned him awards from organizations like the National Academy of Sciences, the American Psychological Association, and the American Humanist Association. In 2013, he was named in Prospect magazine's World Thinkers list.