"Nor is the empire of the will over our mind more intelligible ... We have command over our mind to a certain degree, but beyond that lose all empire over it: and it is evidently impossible to fix any precise bounds to our authority, where we consult not experience"
— Hume, David (1711-1776)
(I.iii.14; cf. pp. 298-300 ["To be inserted in Vol. I. page 282. line ult. after these words (any idea of power.) beginning a new paragraph."])
David Hume, A Treatise of Human Nature. Being an Attempt to Introduce the Experimental Method of Reasoning into Moral Subjects. 3 vols. (London: Printed for John Noon, 1739; Thomas Longman, 1740). <Link to ESTC><Link to ECCO><Link to ECCO-TCP><Link to OLL>
Reading David Hume, A Treatise of Human Nature, eds. D. F. and M. J. Norton (Oxford: OUP, 2000). Searching in Past Masters and OLL editions.