Every day on this planet some species that doesn't draw the attention of humans goes extinct. - Liu Cixin

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.

Most people would have difficulty explaining how they know two and two make four.

Everyone likes to reminisce, but not one wants to listen, and everyone feels annoyed when someone else tells a story.