What distinguishes the true artist from not present?

[Fed]

Сообщение от Pavel

What exactly did Medvedev, except that its all they know? You compare it with Pirismani? But Pirosmani artist and it shows in the works

  Medvedev, a naive artist, they have main-expressiveness. You can not have them in order of size.
The last I brought Cartney Degas. He was, as you can see, too, can be with someone "pushing", but not likely, many give up such a picture at home, even without a signature.
  In the meantime, I know artists honored with merit, and "boring" pictures of the bargain, which simply do not need anyone. That's me to the fact that one of the advantages of the Medvedev-its apparent consumer qualities.
And about the techniques and vision of various artists again everyone else in the controversy and did not return.