classic SciFi 
 beautifully written with well developed characters 
 throw in a set of well though out social, technological, political ideas 
 Gully Foyle, journeyman spaceman, low on the social ladder, is transformed into a driven purposeful man, motivated by desire for revenge on the crew of the ship that abandoned him to die in space. 
 set against the backdrop of political squabbling on the inner planets of the solar system and a war with the colonisers of the outer planets 
 much of the wow technology is linked to human potential, ability to jaunt (teleport within 1000km to any area you know intimately) is latent skill of the human mind, (view spoiler)[as ultimately is the ability to transport through out space time, and the ability to trigger powerful energy source (hide spoiler)] 
 interesting to follow the transformation of Gully Foyle from shiftless to ruthless (view spoiler)[ to redeemer of humanity from social control and limits of solar system (hide spoiler)]