Why do we speak figuratively, if everything could be told in a simple, direct, literal manner? Metaphorical language has been fascinating scholars since the time of the ancient Greek philosophers, but the questions of why and how we use it gathered considerable attention again only in the twentieth century. The chapter is first going to review two radically different, but prominent views of metaphor that propose different roles for them in language and cognition, Lakoff and Johnson's (1980) Cognitive Metaphor Theory and Sperber and Wilson's (2008) deflationary account based on Relevance Theory. After taking stock of prior models, the pragmatic functions of metaphors are going to be discussed by highlighting two important roles they play in communication beyond rhetoric: revealing hidden properties and covering up risky This chapter is a deeper elaboration and further development of ideas laid out initially in the very first scientific paper I have written, in Hungarian (Forgács, 2009), as a Ph.D. student guided by Professor Csaba Pléh. I would like to express my eternal gratitude for his helpful, careful, and truly transformative mentorship and for introducing me, through his most welcoming and witty manner, to the excitement and joy of cognitive science, in hope of following in his footsteps towards the heights of the science of the mind. Csaba has been a sharp and open minded mentor from the classical school, encouraging investigations outside of his main area of interest, which shows in the diversity of his students' research. As a brilliant scientist, excellent speaker and outstanding mentor there is a lot to learn from him, but the Pléh-superpower seems to be beyond reach: Csaba is able to recall and recommend practically any author, book and idea from the recorded history of psychology and philosophy alike. Particularly noteworthy is the smaller havoc that erupted in the Ph.D. room when someone accidentally printed his full bibliography instead that of the past five years: the printer could not be stopped. His productivity and intellectual freedom combined with his friendliness and organization skills not only enabled him to establish cognitive science in Hungary, but to bring fresh air to the study of mind and language at large -which is radiating ever further through the several generations of students all over the globe he helped spread their wings.