Painting cannot be explained, at least, I am not able to.  
As Francis Bacon said:  
Painting is made only to achieve an excitement in the stomach.  
And how could that be explained? 
Most of the times one paints for a secret dialogue,  
hidden with oneself, that nobody hears or see but that in occasions
can be sensed.  
There are moments in which the accident, a not well given scrape stroke 
in a different direction to one we wanted or a splash of another color,  
can put a painting up side down or convert it in other one better than
the one we had conceived.  
Painting contains a mystery that when it catches you it doesn't let you
go, no matter how much you try it,  
always and ingenuously, thinking in discovering it you drag your life
in that zeal. 

Gilberto Frometa