The paper compares the two components of the Stoic definition of pathos, the logico-linguistic component and the physiological, ‘pneumatic’ one, in order to examine the role that each of them plays in the onset of pathos, its persistence in the human soul, its possible eradication. The analysis is focused on anger which reveals some peculiarities, especially as regards its logical structure, due to the fact that this passion seems to be the combination of two different feelings. The anger indeed is (...) classified as a species of desire but the description of its onset also includes pain. (shrink)