Thus, too, delight in the sublime in nature is only negative (whereas that in the beautiful is positive): that is to say, it is a feeling of imagination by its own act depriving itself of its freedom by receiving a final determination in accordance with a law other than that of its empirical employment. In this way it gains an extension and a might greater than that which it sacrifices. But the ground of this is concealed from it, and in its place it feels the sacrifice or deprivation, as well as its cause, to which it is subjected. The astonishment amounting almost to terror, the horror and sacred awe, that takes hold of one when gazing upon the prospect of mountains ascending to heaven, deep ravines and torrents raging there, deep shadowed solitudes that invite to brooding melancholy, and the like - all this, when we are assured of our own safety, is not actual fear. Rather is it an attempt to gain access to it through imagination, for the purpose of feeling the might of this faculty in combining the movement of the mind thereby aroused with its serenity, and of thus being superior to internal and, therefore, to external, nature, so far as the latter can have any bearing upon our feeling of well-being. For the imagination, in accordance with laws of association, makes our state of contentment dependent upon physical conditions. But acting in accordance with principles of the schematism of judgement (consequently so far as it is subordinated to freedom), it is at the same time an instrument of reason and its ideas. But in this capacity it is a might enabling us to assert our independence as against the influences of nature, to degrade what is great in respect of the latter to the level of what is little, and thus to locate the absolutely great only in the proper vocation of the subject.

Immanuel Kant: Critique of Judgement