Although the method is simple, it shows how, mathematically, random brute force can overcome precise logic. It's a numerical approach that uses quant… - Liu Cixin

But when they gaze up at the stars, they turn sentimental and believe that if extraterrestrial intelligences exist, they must be civilizations bound by universal, noble, moral constraints, as if cherishing and loving different forms of life are parts of a self-evident universal code of conduct.

The only constant in a world of tremendous change is the swift passage of time. Five years passed like a blur.

Life reached an evolutionary milestone when it climbed onto land from the ocean, but those first fish that climbed onto land ceased to be fish.