What distinguishes the true artist from not present?

[Veronic]

Сообщение от Seriy

Paul, you would have little material with images of popular artists of the Salon, to compete with the Impressionists, which you mention, sometimes because none of this info, except you do not own, all would be very interesting.

I'm afraid that Paul does not like these artists, because they at one time were not allowed van Gogh to the salon.
Personally for me it would be very interested to know the history of that time. Many of the materials, I sometimes read here http://www.artrenewal.org/