Utopian's vision (8)
I believe the answer is:
idealism
'utopian's vision' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for idealism that I've seen before include "A view of Berkeley" , "Desire for perfection" , "Thoughts of perfection for miladies" , "Noble attitude from miladies" , "Mental state of seeking perfection or highest standards" .)