we can only see beauty in so far as we introduce form. The instability of the form can be no advantage to a work of art; the determinate keeps constantly what the indeterminate reaches only in those moments in which the observer's imagination is especially propitious.
 George Santayana, The Sense of Beauty (1896). copy citation

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Author George Santayana
Source The Sense of Beauty
Topic imagination beauty
Date 1896
Language English
Reference
Note
Weblink http://www.gutenberg.org/files/26842/26842-h/26842-h.htm

Context

“An object which stimulates us to this activity, therefore, seems often to be more sublime and beautiful than one which presents to us a single unchanging form, however perfect. There seems to be a life and infinity in the incomplete, which the determinate excludes by its own completeness and petrifaction. And yet the effort in this very activity is to reach determination; we can only see beauty in so far as we introduce form. The instability of the form can be no advantage to a work of art; the determinate keeps constantly what the indeterminate reaches only in those moments in which the observer's imagination is especially propitious. If we feel a certain disappointment in the monotonous limits of a definite form and its eternal, unsympathizing message, might we not feel much more the melancholy transiency of those glimpses of beauty which elude us in the indeterminate?” source