Click on the phrases to see them in context. The original texts by Immanuel Kant and David Hume are available from the Gutenberg Projet.

That this proceeds from an original quality or primary impulse, will likewise appear evident, if we consider that it is the distinguishing characteristic of these passions Unless nature had given some original qualities to the mind, it coued never have any secondary ones; because in that case it would have no foundation for action, nor coued ever begin to exert itself.