The play "The Hairy Ape" by Eugene O’Neill explores the theme of identity crisis and belonging. The protagonist, Yank, struggles with questions like "Who am I?" and "Where do I belong?" The play delves into the tragedy of human existence, using Lacan's mirror theory and Freud's psychoanalysis to analyze Yank's struggle. The main goal is to decipher the protagonist's tragedy and the overall theme of the play through these psychological lenses.