There can't be a pure myth, especially when the myth has been handed down in the oral tradition. As the stories are told, they change. If the stories don't change they just die.
Indians are marvelous storytellers. In some ways, that oral tradition is stronger than the written tradition.
I come out of a strong oral tradition in the South.
My love of storytelling comes from oral tradition, the stories from my grandmother and conversations with [my] mother. The world is full of discussions of condensation, drifts, misunderstanding, repetition. These are the materials I work with. My debt is to these women.
The point is there is more information now then you can pass along comfortably in an oral tradition, say a strictly speaking culture. That is a problem.
Language pedants hew to an oral tradition of shibboleths that have no basis in logic or style, that have been defied by great writers for centuries, and that have been disavowed by every thoughtful usage manual.
Writing with a simplified alphabet checked the power of custom of an oral tradition but implied a decline in the power of expression and the creation of grooves which determined the channels of thought of readers and later writers.
The question now becomes about defining your terms. What is literature? Unless we allow it to encompass the oral tradition from which it grew, which means taking it back to Homer and beyond, it demands the written word - poetry and prose. [Bob] Dylan is no slouch at the written word, both in its own right, and transcribed from his lyrics, which have often been acclaimed as poetry and may well stand up as such. But that is not his métier.
I think we fool ourselves and really negate a great deal of history if we think that the oral history of poetry is shorter than the written history of poetry. It's not true. Poetry has a longer oral tradition than it does written
The world's holy texts are built on ancient oral traditions.
