(authors)
It is yin and yang. Light is the left hand of darkness... how did it go? Light, dark. Fear, courage. Cold, warmth. Female, male. It is yourself, Therem. Both and one. A shadow on snow.
Ursula K. Le Guin, The Left Hand of Darkness
What you see above is the output of UNIX fortune. Sometimes it is good, sometimes it is dumb.