Page:An Enquiry Concerning Human Understanding - Hume (1748).djvu/117

 that, in fact, Heat is a constant Attendant of Flame; but what is the Connexion betwixt them, we have no room so much as to conjecture or imagine. 'Tis impossible, therefore, that the Idea of Power can be deriv'd from the Contemplation of Bodies, in single Instances of their Operation; because no Bodies ever discover any Power, which can be the Original of this Idea.

, therefore, external Objects, as they appear to the Senses, give us no Idea of Power or necessary Connexion, by their Operations in particular Instances; let us see, if this Idea be deriv'd from Reflection on the Operations of our own Minds, and be copy'd from any internal Impression. It may be said, that we are every Moment conscious of Power in our own Minds, while we feel, that, by the simple Command of our Will, we can move the Organs of our Body, or direct the Faculties of our Minds, in their Operation. An Act of Volition produces Motion in our Limbs, or raises a new Idea in our Imagination.