The article argues for a necessity to increase human awareness of language as functional biological behavior rather than simply a tool in the service of communication, by emphasizing the difference between talk and text as ontologically different semiotic phenomena characteristic of the human cognitive domain. The established tradition to view written words as linguistic signs leads the studies of natural language astray, effectively hiding its nature as biologically functional orientational behavior in a consensual domain that evolved with the evolution of our species and was not a cultural invention. Because of the identification of text with talk in linguistic semiotics, the empirical validity of the core semiotic concept of natural linguistic sign, based on the so-called semiotic triangle, is undermined. While talk is a dynamic fact of nature, text is a static artifact; it is argued, therefore, that the analytical approach to linguistic signs as objects in the world is inadequate, and the notions of first- and second-order semiotics are introduced. It is concluded that awareness of the cognitive-semiotic difference between talk and text and their respective roles in the evolution of humans may facilitate further research into the nature and origin of humanness.