"In other words, after some time the surface you work on (or the colors), get muddy, worn out, lifeless, tired, dead… This appears to be a source of unavoidable annoyance to many artists who use the traditional means. Therefore it is advisable to make as less mistakes as possible during the process of painting (unless your style depend on taking the “advantage” of mistakes, which is also possible, only this requires a higher level of skill and insight)."

— Petar Meseldžija