People · 1818
Poetry is the universal language which the heart holds with nature and itself. He who has a contempt for poetry, cannot have much respect for himself, or for anything else.
— William Hazlitt · Lectures on the English Poets

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Our reading
An editorial interpretation.
Poetry is described as the shared language between the heart and the natural world, and between a person and their own inner self. From there the speaker argues that looking down on poetry signals a lack of self-respect, and of respect for everything else too.
Context reviewed