Transcendental conceptions of subjectivity, beginning with Descartes and including Kant, Fichte, and Husserl as well as neo-transcendental accounts of the 20th century, try to explicate a subject’s subjectivity as a necessary condition for all theoretical and practical validity claims. According to this conception, only this subject-theoretical presupposition allows for an adequate foundation of terms of authorship of action and self-determination. However, the conceptual self-explication of this position faces some inherent difficulties, which has repeatedly been pointed out even by representatives of (...) this school of thought themselves. Moreover, it seems as if the constitutional achievements of transcendental philosophy are increasingly being detached from philosophy: due to the development of the modern sciences of man, they are step by step conceived as objects of empirical research. This paper looks critically into this thesis of detachment. (shrink)