Upham, T. C. (1828). Emotions of sublimity. In T. C. Upham, Elements of intellectual philosophy, designed as a text-book (pp. 407-416). Portland, ME, US: Shirley and Hyde.
http://dx.doi.org/10.1037/11897-029
Those emotions, which we designate as sublime, are a class of feelings, which have much in common with emotions of beauty; they do not differ so much in nature or kind, as in degree. When we examine the feelings, which go under these two designations, we readily perceive, that they have a progression; that there are numerous degrees in point of intensity; but the emotion, although more vivid in one case than the other, and mingled with some foreign elements, is, for the most part, essentially the same. So that it is, by no means, impossible to trace a connection even between the fainter feelings of beauty, and the most overwhelming emotions of the sublime. (PsycINFO Database Record (c) 2017 APA, all rights reserved)