The boundaries between truth and falsity are being assessed in the context of Plato’s theory of recollection. The nature of knowledge is seen as quite elusive, and this is why it evokes a need for questioning the notion of truth. Most important theories of truth are analyzed and taken to consideration in order to assess the boundaries of truth and falsity. The question of truth and falsity is being discussed in the context of broader topic of perception of the Universe. (...) This is why the place of language and sensations is analyzed in the frame of cognizance. Theories of modern and post-modern thinkers are seen as a continuation of some statements made by Plato. Some approaches to cognizance of the Universe are evaluated in the diachronic aspect in order to develop a suitable theory of boundaries between truth and falsity. Approaches to paradoxes related to knowledge and deception are assessed in order to specify the distinction between truth and falsity. Machine assistance in the process of decision making is analyzed. (shrink)