Abstract
The text presents a short account of the history of the philosophically relevant key concepts of feminist theory – sex and gender. Those concepts were crucial in the process of the constitution of gender studies as well as for the manouvering of feminist practice. On the other hand, however, as Judith Butler demonstrates exceptionally, these concepts are also the points of a fruitful debate, opening the possibility for resignification, different ways of thinking about the fundamental assumptions of feminist theory. While it leaves feminist theory devoid of a firm,fixed position, ensuing instability, it offers a specific, subversive potential for a theory in general, while expanding the domains of inclusiveness in practice