Every GENUINE art form in its own way is a path to the inmost reality of man and of the world. It is therefore a wholly valid approach to the realm of faith, which gives human experience its ultimate meaning. That is why the Gospel fullness of truth was bound from the beginning to stir the interest of artists, who by their very nature are alert to every "epiphany" of the inner beauty of things.

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This definition in the dictionary is what I feel they mean by being genuine.
free from pretense, affectation, or hypocrisy; sincere: a genuine person.