The simple, rural subjects perhaps evoked nostalgia in the richer city populations of the time.
That's because simple subjects can yield intricate, interesting compositions.
Superficially flammability seems to be a simple subject, but in practice it becomes quite involved.
"I have come to like simpler subjects better" - Bruce Crane.
He'll have to confront a bigger, simpler subject: trust.
Finessing seems a relatively simple subject when introduced to a beginner, although not easy to define.
She has moved from relatively simple subjects and structures to much more involved work.
He would have settled for the simplest subject.
There be a clear place for each simple subject, which is regarded as falling within one of the major disciplines in the scheme.
This will be appropriate for simple subjects in a faceted classification scheme.