In the course of my research, I came across this somewhat bold statement by US artist Ad Reinhardt (1913-1967), who is known for his black paintings:
The more stuff in it, the busier the work of art, the worse it is. More is less. Less is more. The eye is a menace to clear sight. The laying bare of oneself is obscene. Art begins with the getting rid of nature.
These are interesting observations which seem to say the decision regarding what goes into a painting and what stays out is most important in creating a work of true value. Reinhardt reveals a keen sense of humour with his direct, opinionated views.
This is particularly relevant at the moment as I make similar decisions in my latest pared down paintings.