This essay raises a philosophical question concerning the language of Life Theory. It aims to prove the assumption that in contrast to Life Science, which today is connected to neuroscience and biotechnology, a theory that comprehends “life itself” must exceed the computerized mathematics of modern materialistic positivism. For this purpose, the conceptual possibility of such a theory is analysed from the perspective of 20th century philosophy of life. Beginning with Henri Bergson, who developed an immanent concept of life“from within itself” (...) in L’évolution créatrice, the analysis turns to Alain Badiou, whose fundamental onto-phenomenology of being is summed up in Logiques des mondes by answering the question “what is it to live”. The comparison between the two philosophies exposes the conditions of a Life Theory that encompasses, beyond the results of the digitalizable language translated from the neurons of the human brain, the uncountable and unpredictable aspects of living and being alive. These conditions are: an ethics of universality, a differential philosophy of time, and a concept of independent novelty enforced by the aesthetics of subjective creation. (shrink)