Tucker, A. (1805). Introduction of motives. In A. Tucker, The light of nature pursued, together with some account of the life of the author by Sir H. P. St. John Mildmay (pp. 82-93). London, England: R Faulder; London, England: T Payne.
http://dx.doi.org/10.1037/11805-009
Sensation first moves us to action, in order to continue it if pleasant, or remove it if painful: thus the taste of victuals urges children to take more of them into their mouths, and the smart of a pin to catch away their hands from it. Habits, too, attract the notice to follow them inadvertently by that ease there is in giving way to the little transient desires they present rather than restraining them. And when experience has brought us acquainted with the properties of things external, and the command we have over the ideas of our mind, which knowledge gives us the use of our understanding, we can then procure motives for ourselves; either by application of such objects as will raise any particular desire, or by putting reflection upon the hunt for something that will please us, or suggesting inducements to strengthen us in our purpose, or by resolution to banish some intruding ideas, and fix our whole attention upon others. 2. Thus there are three causes contributing to introduce motives into the scale: the action of the mind, impulse of external objects, and mechanical play of our organs; and these three mutually influence one another. The mind operates two ways, either by design or inadvertently; for when she turns her notice upon an idea, though with no other view than for the present amusement it affords, this occasions it to lead in a train of its associates. Therefore, if we have any hurtful inclination belonging to us, it is very dangerous to let our thoughts run upon objects relative thereto; for we may raise a disturber we did not expect. But when the mind acts with design, nevertheless she has that design suggested by something happening to her from without, or by the spontaneous working of imagination; to which sources she must have recourse in search for motives of her conduct, or gathering encouragements to support her in an undertaking. (PsycINFO Database Record (c) 2016 APA, all rights reserved)