In Celtic design, the spiral symbolizes various concepts such as growth, development, and the cyclical nature of existence. Spirals often appear in ancient artifacts and are associated with the unity of life, illustrating the journey of the soul from birth to death and rebirth. This symbol reflects the interconnectedness of all beings and the passage of time. Spirals can represent the journey inward toward the self or outward into the universe, encompassing both physical and spiritual aspects. Thus, they hold a profound significance in Celtic art and spirituality.