Methuselah's Children by Robert A. Heinlein follows the secretive Howard Families, a group of people who enjoy exceptionally long life for generations of selective reproduction. When their existence is revealed, widespread jealousy and fear drive them to run away from Earth in a hijacked starship. Under the leadership of clever and charismatic Lazarus Long, they are on an interstellar journey, two very different foreign civilizations-with a peaceful, communal telepaths and with an integrity society-a more tolerant before returning to a more tolerant earth. The combination examines adventure, social comments, and speculative science, novels beyond its limitations and explores the subjects of longevity, freedom and humanity drives.