Successful works of art have a message.
It may be implicit or implied, emotional, conceptual or literal, inferred or stated.
But a message nonetheless.
This applies to any form of art: paintings, sculpture, poetry, writing, music, architecture, photography, cine, any art form or any form that depends on art, even advertising brochures and window displays.
Art is for the receiver.
If he understands it, he likes it. If it confuses him, he may ignore or detest it.
It is not enough that the creator of the work understands it; those who receive it must.
Many elements and much expertise go into the creating of successful works of art. Dominant amongst them is message, for this integrates the whole and brings comprehension and appreciation to those for whom it is intended.
Understanding is the base of affinity, reality and communication.
A message is fundamental to understanding.