Full Idea
The voluntary would seem to be what has its starting-point in the agent himself, when he knows the particulars in which the action lies.
Gist of Idea
Voluntary acts have their starting-point in the agent himself
Source
Aristotle (Nicomachean Ethics [c.334 BCE], 1111a23)
A Reaction
He cites failure to know the circumstantial particulars as the most forgivable sort of ignorance. Aristotle's key question about responsibility seems to concern the 'starting-point' of an action. Not free will - just the start of an event.
Book Reference
Aristotle: 'Nicomachean Ethics', ed/tr. Reeve, C.D.C. [Hackett 2024], p.37