Huxley linked his last novel, Island, to one of his most famous novels known as Brave New World. In both novels, Huxley introduces drugs that affect human experiences, one called "soma" and the other "moksha". The differences between the two drugs are that "soma flattens and dulls the human experience, moksha enhances and enlightens it", leading some to question what it means to be "truly human". In all of his work, Huxley was aware that "technoscience, particularly biomedical science, could fundamentally change these aspects of life ».”