This document presents excerpts from "Long for This World: The Strange Science of Immortality" by Jonathan Weiner, which explores the multifaceted concept of longevity and immortality. The text examines historical and mythical perspectives on eternal life, from ancient legends like the Phoenix and Gilgamesh to philosophical musings by figures like Francis Bacon. It also investigates the biological mechanisms of aging, discussing theories such as the accumulation of cellular damage and the role of free radicals, and introduces organisms like the hydra and Tokophrya as subjects of longevity research. Furthermore, the excerpts highlight the controversial pursuit of radically extended human lifespans championed by figures like Aubrey de Grey and his "Strategies for Engineered Negligible Senescence" (SENS), alongside the ethical and societal implications of such advancements. The author contrasts the "skin-out" and "skin-in" approaches in gerontology, ultimately revealing the ongoing scientific and philosophical debate surrounding human mortality.