Bioethics originated as a specific collective response of representatives of biomedical sciences, humanities and the public to the complexity of moral, anthropological and ontological problems (often in situations bordering on life and death) caused by constant development of biomedical technologies. These problems escape simple, universal (eternal) solutions. This makes them “finite”, multiple, dependent on the “here and now” circumstances of the choise of cognitive and communicative transdisciplinary strategies.The word “transdisciplinary” means interdisciplinary biomedical practices where in order to achieve common solutions and understand their common problem as a whole, it is necessary to transcend the area of expert authority and move into the area of “life-world”. From the philosophical point of view the idea of complexity can be interpreted as a network of relationships between the ideas of multiplicity and unity. The problem is to bring out through communication a unity of different kinds of unities presented in philosophy, theology, science, humanities and public discourses. To some extent transdisciplinarity is experience of paradoxes. They escape final resolution and give rise to ever new interpretations, have a permanent tendency to reemerge in ever new situation. They operate like “causa sue” of transdisciplinary communications in bioethics.