Poul Anderson 
Boat of a Million Years [EPUB ebook] 

Early in human history, certain individuals were born who live on, unaging, undying, through the centuries and millennia. We follow them through over 2000 years, up to our time and beyond – to the promise of utopia and the challenge of the stars. A milestone in modern science fiction and a New York Times Notable Book on its first publication in 1989, this is one of a great writer’s finest works.