This study explores the fundamental associations and symbolic implications of images of the moon and sky in Coleridge’s poems, particularly “Dejection: An Ode” and the Trio. Images of the moon in Coleridge’s poetry, particularly in “Dejection” and the Trio, are used to reflect the poet’s two ambivalent spiritual states, that is, dejection and gladness, which are manifestations of the poet’s sterility and creativity, respectively. Images of the moon and the sky are taken from observable nature, but Coleridge connects them with the poet’s inner self. These images are also used to form beautiful, romantic natural scenery. In addition, Coleridge links the image of the hidden and half-hidden moon with either of his two spiritual states, depending on the context. In contrast, he connects the image of the sky with happiness and fruitful contact with nature, which fulfills his poetic vision and inspiration.