Some things are easy for anyone to grasp, such as when God speaks simply, as it were, with wealth, honor, children, long life, a good income.
Everyone will agree that this is good.
But when the revelation comes from a higher level, from the hidden world, in which good is given in a different manner, a person has no clear understanding of what is happening to him.
Those experiences that are superficially good, that are easy to understand, come from a lower world.
When we ourselves are on a relatively low level, that is enough for us.
Art for the masses, too, is on a low level, one that everyone, even the most uneducated, can appreciate.
Good art is necessarily complex and subtle, and a person who is not trained cannot fully appreciate it.
Higher messages require greater effort to accept.
They are liable to come in ways that are inexplicable–ways that, because they come from the hidden world, appear in our revealed world as darkness.
–Rabbi Adin Steinsaltz
From Learning from the Tanya by Rabbi Adin Steinsaltz