The main role of the Muses in Greek mythology is to inspire and provide guidance in the arts and sciences. Each Muse is responsible for a specific domain—ranging from poetry and music to history and astronomy. They serve as symbols of creativity and knowledge, often invoked by artists and scholars seeking inspiration. The Muses' presence underscores the importance of artistry and intellectual pursuits in ancient Greek culture, reinforcing the belief that creativity is a divine gift supported by the gods.