Time Enough for Love

USED - The capstone and crowning achievement of the Future History series, from the New York Times bestselling Grand Master of Science Fiction... Time Enough for Love follows Lazarus Long through a vast and magnificent timescape of centuries and worlds. Heinlein's longest and most ambitious work, it is the story of a man so in love with Life that he refused to stop living it; and so in love with Time that he became his own ancestor.