In The Tenets of Cognitive Existentialism, Dimitri Ginev draws on devel-opments in hermeneutic phenomenology and other programs in hermeneutic philosophy to inform an interpretative approach to scientific practices. At stake is the question of whether it is possible to integrate forms of reflection upon the ontological difference in the cognitive structure of scientific research. A positive answer would have implied a proof that (pace Heidegger) “science is able to think.” This book is an extended version of such a proof. Against those who claim that modern science is doomed to be exclusively committed to the nexus of objectivism and instrumental rationality, the interpretative theory of scientific practices reveals science’s potentiality of hermeneutic self-reflection. Scientific research that takes into consideration the ontological difference has resources to enter into a dialogue with Nature. Ginev offers a critique of postmodern tendencies in the philosophy of science, and sets out arguments for a feminist hermeneutics of scientific research.