In a word, the aesthetic idea is a representation of the imagination, allied with a given concept, with which, in the free employment of imagination, such a multiplicity of partial representations are bound up, that no expression indicating a definite concept can be found for it one which on that account allows a concept to be supplemented in thought by much that is indefinable in words, and the feeling of which enlivens the cognitive faculties, and with language, as a mere thing of the letter, combines spirit.