The present thesis is about the apraxia objection, one of the most well-known anti-skeptical arguments of antiquity. Broadly speaking, this objection asserts that skepticism is a philosophical doctrine that is impossible to be put into practice because it leads to the apraxia, namely, a state of lack, absence or impossibility of action. The main aim of this work is to make a systematic and detailed study on the apraxia objection in Academic skepticism. To this aim, it will be examined three important features of that objection: (i) its sources, namely, the skeptical theses against which the objection is addressed; (ii) the formal structure of the argument, along with its several versions and forms; (iii) the different answers that were built
