" MORTAL LIFE IS CYCLES. Day and night. Seasons. Waking and sleep. This cyclical nature was built into all mortal creatures by Enefa, and the humans have refined it further by building their cultures to suit. Work, home. Months become years, years shift from past to future. They count endlessly, these creatures. It is this which marks the difference between them and us, I think, far more than magic and death. "
― N.K. Jemisin , The Inheritance Trilogy (Inheritance, #1-3.5)