The tale of Echo and Narcissus in Greek mythology explores themes of unrequited love and self-obsession. Echo, a nymph, falls in love with Narcissus but is cursed to only repeat the words of others. When Narcissus, enamored with his reflection, spurns her advances, Echo fades away, leaving only her voice behind. This myth serves as a cautionary tale about the dangers of vanity and emotional isolation, emphasizing the importance of connection and the repercussions of neglecting the feelings of others.