Gabriel

“The universe is a dark forest. Every civilization is an armed hunter stalking through the trees like a ghost, gently pushing aside branches that block the path and trying to tread without sound. Even breathing is done with care. The hunter has to be careful, because everywhere in the forest are stealthy hunters like him. If he finds other life—another hunter, an angel or a demon, a delicate infant or a tottering old man, a fairy or a demigod—there’s only one thing he can do: open fire and eliminate them. In this forest, hell is other people. An eternal threat that any life that exposes its own existence will be swiftly wiped out. This is the picture of cosmic civilization. It’s the explanation for the Fermi Paradox.”
― Liu Cixin, The Dark Forest

“The trick to happiness wasn’t in freezing every momentary pleasure and clinging to each one, but in ensuring one’s life would produce many future moments to anticipate.”
― Brandon Sanderson, Oathbringer

“And in all of this, to what end?” “No end save itself: I pass the time to pass the time, and stay involved to stay involved.” “Yes, but why?” “Why not?”
― Iain M. Banks, The Hydrogen Sonata

“Fate lies within the light cone.”
― Liu Cixin, The Dark Forest