What is Outsider Art? Art Brut?

We understand by this term works produced by persons unscathed by artistic culture, where mimicry plays little or no part… These artists derive everything-subjects, choice of materials, means of transposition, rhythms, styles of writing, etc. – from their own depths, and not from the conventions of classical or fashionable art. We are witness here to the completely pure artistic operation, raw, brute and entirely reinvented in all of it’s phases solely by means of the artists ‘ own impulses. It is thus an art that manifests an unparalleled inventiveness.