Bishop Köyu said (it seems to me very admirably), 'It is only a person of poor understanding who wishes to arrange things in complete sets. It is incompleteness that is desirable.' In everything regularity is bad. To leave a thing unfinished gives interest, and makes for lengthened life. They say that even in building the [imperial] palace an unfinished place is always left. In the writings of the ancients, inner and outer [Buddhist and non-Buddhist], there are many missing chapters and parts.

Tsurezure-Gusa (Essays in Idleness)