Anyone who can handle a needle convincingly can make us see a thread which is not there.
All art is image making and all image making is the creation of substitutes.
What an artist worries about as he plans his pictures, makes his sketches, or wonders whether he has completed his canvas, is something much more difficult to put into words. Perhaps he would say he worries about whether he has got it 'right'.
Art does not copy nature - it suggests it.
There really is no such thing as art. There are only artists.
The Painter must leave the beholder something to guess.