The Ringworld Engineers
Larry Niven
Ringworld (2)
A Better World (The Brilliance Trilogy Book 2)
Marcus Sakey
The Brilliance Trilogy (2)
Excession (The Culture 5)
Iain M. Banks
The Culture (5)
Consider Phlebas (The Culture 1)
The Culture (1)
The demon-haunted world: science as a candle in the dark
Carl Sagan