Tropes are not only rhetorical means, which are used as a creative and / or persuasive linguistic means in poetry and public speech. They are also a cognitive tool which helps people to understand the world and to express their world. As they are the basis on which our worldview and even our everyday speech is founded, the question must be posed as to whether utterances containing tropes can be said to be true. This has been an epistemological problem since Nietzsche expressed his doubts about the possibility that figurative language could give access to truth. However, since then research has paid little attention to this question. -18 papers by linguists, philosophers, psychologists and literary scholars have been collected in this volume. Their 21 authors use various approaches or paradigms in order to define metaphor, metonymy, synecdoche, irony, euphemism, antonomasia and hyperbole and find an answer to the crucial epistemological questions, namely whether and to what extent utterances containing tropes can be said to be true or false.