Like E. T. in the Spielberg film, the acorn seems nostalgic, sad, silent, and filled with yearning for an image of "home." Loneliness presents the emotions of exile; the soul has not been able to fully grow down, and is wanting to return. To where? We do not know, for that place the myths and cosmologies say is gone from memory. But the imaginative yearning and the sadness attest to an exile from what the soul cannot express except as loneliness. All it can recall is a nostalgia of feeling and an imagination of yearning. And a condition of want beyond personal needs.
— James Hillman, The Soul's Code