As a rule, with me an unfinished thing is a thing that might as well be rubbed out. It’s better, if there’s something good in it that I might make use of elsewhere, to leave it at the back of my mind than on paper in a drawer. If I leave it in a drawer it remains the same thing but if it’s in the memory it becomes transformed into something else.
Source:The Art of Poetry No. 1, The Paris Review (Spring-Summer, 1959)