Thomas Sebeok attributed it to what he called the ‘wretched’ translation of Uexküll’s Theoretische Biologie (1920) that the notion of Umwelt did not reachthe Anglo-American intellectual community much earlier. There is no doubt that making more of Uexküll’s Umweltlehre available in English will not only furtherthe biosemiotic movement, but also fill a gap in the foundational theoretical canon of semiotics in general. The purpose of this paper is to address issues of terminology and theory translation between Uexküll’s Umweltlehre and current biosemiotics.

Modern biology gives many casuistic descriptions of mutual informational interconnections between organisms. Semiotic and hermeneutic processes in biosphere require a set of “sentient” community of players who optimize their living strategies to be able to stay in game. Perceptible surfaces of the animals, semantic organs, represent a special communicative interface that serves as an organ of self-representation of organic inwardness. This means that theinnermost dimensions and potentialities of an organism may enter the senses of other living being when effectively expressed on the outermost surfaces of theformer and meaningfully interpreted by the later. Moreover, semantic organs do not exist as objectively describable entities. They are always born via interpretative act and their actual form depends on both the potentialities of body plan of a bearer and the species-specific interpretation of a receiver. As such the semantic organs represent an important part of biological reality and thus deserve to be contextualized within existing comparative vocabulary. Here we argue that the study of the organic self-representation has a key importance for deeper insight into the evolution of communicative coupling among living beings.

In this dialogue, we discuss the contrast between inexorable physical laws and the semiotic freedom of life. We agree that material and symbolic structures require complementary descriptions, as do the many hierarchical levels of their organizations. We try to clarify our concepts of laws, constraints, rules, symbols, memory, interpreters, and semiotic control. We briefly describe our different personal backgrounds that led us to a biosemiotic approach, and we speculate on the future directions of biosemiotics.