One might say “surely shrieking with pain is a good exampl of involuntary speaking because here

not only there is no act of volition by which we speak
so far from there being an act of volition which worked the speaking

there even was one against it. I should say: Certainly I too wshould call this involuntary speaking. But the effort is also absent in most cases of voluntary speaking. But in most of what we call voluntary speaking I d ⌊And⌋ I agree that an act of volition preparatory ⌊to⌋ or accompanying the speach is absent if by ‘act of volition’ you refer to ˇcertain acts of intention ˇpremeditation or effort. But then I don't see either of these in many cases of voluntary speach I don't feel an effort, in many there were not premeditated & as to intentions sometimes the intended unintentional action is characterized as such by an experience of surprise in others the intentional is characterized by a spoken or imagined ˇexpression of intention.

(2015–) Wittgenstein Source Bergen Nachlass Edition (WS-BNE). Edited by the Wittgenstein Archives at the University of Bergen under the direction of Alois Pichler. In: Wittgenstein Source, curated by Alois Pichler (2009–) and Joseph Wang-Kathrein (2020–). (N) Bergen: WAB.