In 'Generosity: An Enhancement', Richard Powers spins a riveting tale around the discovery of the genetics of happiness and its profound consequences. When Russell Stone, a creative writing instructor in Chicago, meets Thassadit Amzwar, an Algerian student with inexplicable happiness despite a background marred by terror, he is perplexed by her radiant joy. Her boundless optimism captures not only Russell's heart but also the interest of Candace Weld, a college counselor, and the ambitious geneticist Thomas Kurton. As her genotype becomes a point of obsession for those around her, Thassa faces the weight of expectations and the commodification of her genetic secret. Powers masterfully questions the ethics of genomic enhancement, the ownership of our mental states, and the bounds of human contentment through the experiences of his vividly drawn characters, putting forth a narrative that is at once magical and all too real.