"The Castle" is an allegorical poem by the Scottish poet, autobiographer, translator, and critic Edwin Muir, first published in his 1946 collection The Voyage, and Other Poems. The poem's speaker is a soldier who is part of an army defending a castle. The soldier believes the castle to be impenetrable because it is so strong and is defended by brave, loyal men. And yet, to the soldier's shock, the castle is easily overthrown without a fight when the opposing army simply bribes a castle guard to let it inside. Using simple language and an engrossing narrative, the poem illustrates the danger of pride, implying that being overly confident can lead to disaster.